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Sunday, August 6, 2023

Memento mori

From Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Memento_mori
The outer panels of Rogier van der Weyden's Braque Triptych (c. 1452) show the skull of the patron displayed on the inner panels. The bones rest on a brick, a symbol of his former industry and achievement.
Memento mori. Gravestone inscription (1746). Edinburgh. St. Cuthbert's Churchyard.

Memento mori (Latin for 'remember that you [have to] die') is an artistic or symbolic trope acting as a reminder of the inevitability of death. The concept has its roots in the philosophers of classical antiquity and Christianity, and appeared in funerary art and architecture from the medieval period onwards.

The most common motif is a skull, often accompanied by one or more bones. Often this alone is enough to evoke the trope, but other motifs such as a coffin, hourglass and wilting flowers signify the impermanence of human life. Often these function within a work whose main subject is something else, such as a portrait, but the vanitas is an artistic genre where the theme of death is the main subject. The Danse Macabre and Death personified with a scythe as the Grim Reaper are even more direct evocations of the trope.

Pronunciation and translation

In English, the phrase is typically pronounced /məˈmɛnt ˈmɔːri/, mə-MEN-toh MOR-ee. It is reconstructed as ideally pronounced as something like [mɛˈmɛntoː ˈmɔriː] if spoken by an ancient Roman around the beginning of the AD era.

Memento is the 2nd person singular active imperative of meminī, 'to remember, to bear in mind', usually serving as a warning: "remember!" Morī is the present infinitive of the deponent verb morior 'to die'.

In other words, "remember death" or "remember that you die".

History of the concept

In classical antiquity

The philosopher Democritus trained himself by going into solitude and frequenting tombs. Plato's Phaedo, where the death of Socrates is recounted, introduces the idea that the proper practice of philosophy is "about nothing else but dying and being dead".

The Stoics of classical antiquity were particularly prominent in their use of this discipline, and Seneca's letters are full of injunctions to meditate on death. The Stoic Epictetus told his students that when kissing their child, brother, or friend, they should remind themselves that they are mortal, curbing their pleasure, as do "those who stand behind men in their triumphs and remind them that they are mortal". The Stoic Marcus Aurelius invited the reader (himself) to "consider how ephemeral and mean all mortal things are" in his Meditations.

In some accounts of the Roman triumph, a companion or public slave would stand behind or near the triumphant general during the procession and remind him from time to time of his own mortality or prompt him to "look behind". A version of this warning is often rendered into English as "Remember, Caesar, thou art mortal", for example in Fahrenheit 451.

In Judaism

Several passages in the Old Testament urge a remembrance of death. In Psalm 90, Moses prays that God would teach his people "to number our days that we may get a heart of wisdom" (Ps. 90:12). In Ecclesiastes, the Preacher insists that "It is better to go to the house of mourning than to go to the house of feasting, for this is the end of all mankind, and the living will lay it to heart" (Eccl. 7:2). In Isaiah, the lifespan of human beings is compared to the short lifespan of grass: "The grass withers, the flower fades when the breath of the LORD blows on it; surely the people are grass" (Is. 40:7).

In early Christianity

The expression memento mori developed with the growth of Christianity, which emphasized Heaven, Hell, and salvation of the soul in the afterlife. The 2nd-century Christian writer Tertullian claimed that during his triumphal procession, a victorious general would have someone (in later versions, a slave) standing behind him, holding a crown over his head and whispering "Respice post te. Hominem te memento" ("Look after you [to the time after your death] and remember you're [only] a man."). Though in modern times this has become a standard trope, in fact no other ancient authors confirm this, and it may have been Christian moralizing rather than an accurate historical report.

In Europe from the medieval era to the Victorian era

Dance of Death (replica of 15th-century fresco; National Gallery of Slovenia); No matter one's station in life, the Dance of Death unites all.

Christian Theology

The thought was then utilized in Christianity, whose strong emphasis on divine judgment, heaven, hell, and the salvation of the soul brought death to the forefront of consciousness. In the Christian context, the memento mori acquires a moralizing purpose quite opposed to the nunc est bibendum (now is the time to drink) theme of classical antiquity. To the Christian, the prospect of death serves to emphasize the emptiness and fleetingness of earthly pleasures, luxuries, and achievements, and thus also as an invitation to focus one's thoughts on the prospect of the afterlife. A Biblical injunction often associated with the memento mori in this context is In omnibus operibus tuis memorare novissima tua, et in aeternum non peccabis (the Vulgate's Latin rendering of Ecclesiasticus 7:40, "in all thy works be mindful of thy last end and thou wilt never sin.") This finds ritual expression in the rites of Ash Wednesday, when ashes are placed upon the worshipers' heads with the words, "Remember Man that you are dust and unto dust, you shall return."

Memento mori has been an important part of ascetic disciplines as a means of perfecting the character by cultivating detachment and other virtues, and by turning the attention towards the immortality of the soul and the afterlife.

Architecture

Unshrouded skeleton on Diana Warburton's tomb (dated 1693) in St John the Baptist Church, Chester

The most obvious places to look for memento mori meditations are in funeral art and architecture. Perhaps the most striking to contemporary minds is the transi or cadaver tomb, a tomb that depicts the decayed corpse of the deceased. This became a fashion in the tombs of the wealthy in the fifteenth century, and surviving examples still offer a stark reminder of the vanity of earthly riches. Later, Puritan tomb stones in the colonial United States frequently depicted winged skulls, skeletons, or angels snuffing out candles. These are among the numerous themes associated with skull imagery.

Another example of memento mori is provided by the chapels of bones, such as the Capela dos Ossos in Évora or the Capuchin Crypt in Rome. These are chapels where the walls are totally or partially covered by human remains, mostly bones. The entrance to the Capela dos Ossos has the following sentence: "We bones, lying here bare, await yours."

Visual art

Philippe de Champaigne's Vanitas (c. 1671) is reduced to three essentials: Life, Death, and Time

Timepieces have been used to illustrate that the time of the living on Earth grows shorter with each passing minute. Public clocks would be decorated with mottos such as ultima forsan ("perhaps the last" [hour]) or vulnerant omnes, ultima necat ("they all wound, and the last kills"). Clocks have carried the motto tempus fugit, "time flees". Old striking clocks often sported automata who would appear and strike the hour; some of the celebrated automaton clocks from Augsburg, Germany, had Death striking the hour. Private people carried smaller reminders of their own mortality. Mary, Queen of Scots owned a large watch carved in the form of a silver skull, embellished with the lines of Horace, "Pale death knocks with the same tempo upon the huts of the poor and the towers of Kings."

In the late 16th and through the 17th century, memento mori jewelry was popular. Items included mourning rings, pendants, lockets, and brooches. These pieces depicted tiny motifs of skulls, bones, and coffins, in addition to messages and names of the departed, picked out in precious metals and enamel.

During the same period there emerged the artistic genre known as vanitas, Latin for "emptiness" or "vanity". Especially popular in Holland and then spreading to other European nations, vanitas paintings typically represented assemblages of numerous symbolic objects such as human skulls, guttering candles, wilting flowers, soap bubbles, butterflies, and hourglasses. In combination, vanitas assemblies conveyed the impermanence of human endeavours and of the decay that is inevitable with the passage of time. See also the themes associated with the image of the skull.

Literature

Memento mori is also an important literary theme. Well-known literary meditations on death in English prose include Sir Thomas Browne's Hydriotaphia, Urn Burial and Jeremy Taylor's Holy Living and Holy Dying. These works were part of a Jacobean cult of melancholia that marked the end of the Elizabethan era. In the late eighteenth century, literary elegies were a common genre; Thomas Gray's Elegy Written in a Country Churchyard and Edward Young's Night Thoughts are typical members of the genre.

In the European devotional literature of the Renaissance, the Ars Moriendi, memento mori had moral value by reminding individuals of their mortality.

Music

Apart from the genre of requiem and funeral music, there is also a rich tradition of memento mori in the Early Music of Europe. Especially those facing the ever-present death during the recurring bubonic plague pandemics from the 1340s onward tried to toughen themselves by anticipating the inevitable in chants, from the simple Geisslerlieder of the Flagellant movement to the more refined cloistral or courtly songs. The lyrics often looked at life as a necessary and god-given vale of tears with death as a ransom, and they reminded people to lead sinless lives to stand a chance at Judgment Day. The following two Latin stanzas (with their English translations) are typical of memento mori in medieval music; they are from the virelai Ad Mortem Festinamus of the Llibre Vermell de Montserrat from 1399:

Danse macabre

The danse macabre is another well-known example of the memento mori theme, with its dancing depiction of the Grim Reaper carrying off rich and poor alike. This and similar depictions of Death decorated many European churches.

Gallery

The salutation of the Hermits of St. Paul of France

Memento mori was the salutation used by the Hermits of St. Paul of France (1620–1633), also known as the Brothers of Death. It is sometimes claimed that the Trappists use this salutation, but this is not true.

In Puritan America

Thomas Smith's Self-Portrait

Colonial American art saw a large number of memento mori images due to Puritan influence. The Puritan community in 17th-century North America looked down upon art because they believed that it drew the faithful away from God and, if away from God, then it could only lead to the devil. However, portraits were considered historical records and, as such, they were allowed. Thomas Smith, a 17th-century Puritan, fought in many naval battles and also painted. In his self-portrait, we see these pursuits represented alongside a typical Puritan memento mori with a skull, suggesting his awareness of imminent death.

The poem underneath the skull emphasizes Thomas Smith's acceptance of death and of turning away from the world of the living:

Why why should I the World be minding, Therein a World of Evils Finding. Then Farwell World: Farwell thy jarres, thy Joies thy Toies thy Wiles thy Warrs. Truth Sounds Retreat: I am not sorye. The Eternall Drawes to him my heart, By Faith (which can thy Force Subvert) To Crowne me (after Grace) with Glory.

Mexico's Day of the Dead

Posada's 1910 La Calavera Catrina

Much memento mori art is associated with the Mexican festival Day of the Dead, including skull-shaped candies and bread loaves adorned with bread "bones".

This theme was also famously expressed in the works of the Mexican engraver José Guadalupe Posada, in which people from various walks of life are depicted as skeletons.

Another manifestation of memento mori is found in the Mexican "Calavera", a literary composition in verse form normally written in honour of a person who is still alive, but written as if that person were dead. These compositions have a comedic tone and are often offered from one friend to another during Day of the Dead.

Contemporary culture

Roman Krznaric suggests Memento Mori is an important topic to bring back into our thoughts and belief system; "Philosophers have come up with lots of what I call 'death tasters' – thought experiments for seizing the day."

These thought experiments are powerful to get us re-oriented back to death into current awareness and living with spontaneity. Albert Camus stated "Come to terms with death, thereafter anything is possible." Jean-Paul Sartre expressed that life is given to us early, and is shortened at the end, all the while taken away at every step of the way, emphasizing that the end is only the beginning every day.

Similar concepts across cultures

In Buddhism

The Buddhist practice maraṇasati meditates on death. The word is a Pāli compound of maraṇa 'death' (an Indo-European cognate of Latin mori) and sati 'awareness', so very close to memento mori. It is first used in early Buddhist texts, the suttapiṭaka of the Pāli Canon, with parallels in the āgamas of the "Northern" Schools.

In Japanese Zen and samurai culture

In Japan, the influence of Zen Buddhist contemplation of death on indigenous culture can be gauged by the following quotation from the classic treatise on samurai ethics, Hagakure:

The Way of the Samurai is, morning after morning, the practice of death, considering whether it will be here or be there, imagining the most sightly way of dying, and putting one's mind firmly in death. Although this may be a most difficult thing, if one will do it, it can be done. There is nothing that one should suppose cannot be done.

In the annual appreciation of cherry blossom and fall colors, hanami and momijigari, it was philosophized that things are most splendid at the moment before their fall, and to aim to live and die in a similar fashion.

In Tibetan Buddhism

Tibetan Citipati mask depicting Mahākāla. The skull mask of Citipati is a reminder of the impermanence of life and the eternal cycle of life and death.

In Tibetan Buddhism, there is a mind training practice known as Lojong. The initial stages of the classic Lojong begin with 'The Four Thoughts that Turn the Mind', or, more literally, 'Four Contemplations to Cause a Revolution in the Mind'. The second of these four is the contemplation on impermanence and death. In particular, one contemplates that;

  • All compounded things are impermanent.
  • The human body is a compounded thing.
  • Therefore, death of the body is certain.
  • The time of death is uncertain and beyond our control.

There are a number of classic verse formulations of these contemplations meant for daily reflection to overcome our strong habitual tendency to live as though we will certainly not die today.

Lalitavistara Sutra

The following is from the Lalitavistara Sūtra, a major work in the classical Sanskrit canon:

The Udānavarga

A very well known verse in the Pali, Sanskrit and Tibetan canons states [this is from the Sanskrit version, the Udānavarga:

Shantideva, Bodhicaryavatara

Shantideva, in the Bodhisattvacaryāvatāra 'Bodhisattva's Way of Life' reflects at length:

In more modern Tibetan Buddhist works

In a practice text written by the 19th century Tibetan master Dudjom Lingpa for serious meditators, he formulates the second contemplation in this way:

On this occasion when you have such a bounty of opportunities in terms of your body, environment, friends, spiritual mentors, time, and practical instructions, without procrastinating until tomorrow and the next day, arouse a sense of urgency, as if a spark landed on your body or a grain of sand fell in your eye. If you have not swiftly applied yourself to practice, examine the births and deaths of other beings and reflect again and again on the unpredictability of your lifespan and the time of your death, and on the uncertainty of your own situation. Meditate on this until you have definitively integrated it with your mind... The appearances of this life, including your surroundings and friends, are like last night's dream, and this life passes more swiftly than a flash of lightning in the sky. There is no end to this meaningless work. What a joke to prepare to live forever! Wherever you are born in the heights or depths of saṃsāra, the great noose of suffering will hold you tight. Acquiring freedom for yourself is as rare as a star in the daytime, so how is it possible to practice and achieve liberation? The root of all mind training and practical instructions is planted by knowing the nature of existence. There is no other way. I, an old vagabond, have shaken my beggar's satchel, and this is what came out.

The contemporary Tibetan master, Yangthang Rinpoche, in his short text 'Summary of the View, Meditation, and Conduct':

The Tibetan Canon also includes copious materials on the meditative preparation for the death process and intermediate period bardo between death and rebirth. Amongst them are the famous "Tibetan Book of the Dead", in Tibetan Bardo Thodol, the "Natural Liberation through Hearing in the Bardo".

In Islam

The "remembrance of death" (Arabic: تذكرة الموت, Tadhkirat al-Mawt; deriving from تذكرة, tadhkirah, Arabic for memorandum or admonition), has been a major topic of Islamic spirituality since the time of the Islamic prophet Muhammad in Medina. It is grounded in the Qur'an, where there are recurring injunctions to pay heed to the fate of previous generations. The hadith literature, which preserves the teachings of Muhammad, records advice for believers to "remember often death, the destroyer of pleasures." Some Sufis have been called "ahl al-qubur," the "people of the graves," because of their practice of frequenting graveyards to ponder on mortality and the vanity of life, based on the teaching of Muhammad to visit graves. Al-Ghazali devotes to this topic the last book of his "The Revival of the Religious Sciences".

Iceland

The Hávamál ("Sayings of the High One"), a 13th-century Icelandic compilation poetically attributed to the god Odin, includes two sections – the Gestaþáttr and the Loddfáfnismál – offering many gnomic proverbs expressing the memento mori philosophy, most famously Gestaþáttr number 77:

Intercontinental ballistic missile

From Wikipedia, the free encyclopedia
A US Peacekeeper missile launched from a silo

An intercontinental ballistic missile (ICBM) is a ballistic missile with a range greater than 5,500 kilometres (3,400 mi), primarily designed for nuclear weapons delivery (delivering one or more thermonuclear warheads). Conventional, chemical, and biological weapons can also be delivered with varying effectiveness, but have never been deployed on ICBMs. Most modern designs support multiple independently targetable reentry vehicle (MIRVs), allowing a single missile to carry several warheads, each of which can strike a different target. The United States, Russia, China, France, India, the United Kingdom, Israel, and North Korea are the only countries known to have operational ICBMs.

Early ICBMs had limited precision, which made them suitable for use only against the largest targets, such as cities. They were seen as a "safe" basing option, one that would keep the deterrent force close to home where it would be difficult to attack. Attacks against military targets (especially hardened ones) still demanded the use of a more precise, manned bomber. Second- and third-generation designs (such as the LGM-118 Peacekeeper) dramatically improved accuracy to the point where even the smallest point targets can be successfully attacked.

ICBMs are differentiated by having greater range and speed than other ballistic missiles: intermediate-range ballistic missiles (IRBMs), medium-range ballistic missiles (MRBMs), short-range ballistic missiles (SRBMs) and tactical ballistic missiles (TBMs). Short and medium-range ballistic missiles are known collectively as the theatre ballistic missiles.

History

World War II

Primary views of an R-7 Semyorka, the world's first ICBM and satellite launch vehicle

The first practical design for an ICBM grew out of Nazi Germany's V-2 rocket program. The liquid-fueled V-2, designed by Wernher von Braun and his team, was widely used by Nazi Germany from mid-1944 until March 1945 to bomb British and Belgian cities, particularly Antwerp and London.

Under Projekt Amerika, von Braun's team developed the A9/10 ICBM, intended for use in bombing New York and other American cities. Initially intended to be guided by radio, it was changed to be a piloted craft after the failure of Operation Elster. The second stage of the A9/A10 rocket was tested a few times in January and February 1945.

After the war, the US executed Operation Paperclip, which took von Braun and hundreds of other leading German scientists to the United States to develop IRBMs, ICBMs, and launchers for the US Army.

This technology was predicted by US Army General Hap Arnold, who wrote in 1943:

Someday, not too distant, there can come streaking out of somewhere – we won't be able to hear it, it will come so fast – some kind of gadget with an explosive so powerful that one projectile will be able to wipe out completely this city of Washington.

Cold War

After World War II, the Americans and the Soviets started rocket research programs based on the V-2 and other German wartime designs. Each branch of the US military started its own programs, leading to considerable duplication of effort. In the Soviet Union, rocket research was centrally organized although several teams worked on different designs.

In the Soviet Union, early development was focused on missiles able to attack European targets. That changed in 1953, when Sergei Korolyov was directed to start development of a true ICBM able to deliver newly developed hydrogen bombs. Given steady funding throughout, the R-7 developed with some speed. The first launch took place on 15 May 1957 and led to an unintended crash 400 km (250 mi) from the site. The first successful test followed on 21 August 1957; the R-7 flew over 6,000 km (3,700 mi) and became the world's first ICBM. The first strategic-missile unit became operational on 9 February 1959 at Plesetsk in north-west Russia.

It was the same R-7 launch vehicle that placed the first artificial satellite in space, Sputnik, on 4 October 1957. The first human spaceflight in history was accomplished on a derivative of R-7, Vostok, on 12 April 1961, by Soviet cosmonaut Yuri Gagarin. A heavily modernized version of the R-7 is still used as the launch vehicle for the Soviet/Russian Soyuz spacecraft, marking more than 60 years of operational history of Sergei Korolyov's original rocket design.

An SM-65 Atlas, the first US ICBM, first launched in 1957

The US initiated ICBM research in 1946 with the RTV-A-2 Hiroc project. This was a three-stage effort with the ICBM development not starting until the third stage. However, funding was cut in 1948 after only three partially successful launches of the second stage design, that was used to test variations of the V-2 design. With overwhelming air superiority and truly intercontinental bombers, the newly formed US Air Force did not take the problem of ICBM development seriously. Things changed in 1953 with the Soviet testing of their first thermonuclear weapon, but it was not until 1954 that the Atlas missile program was given the highest national priority. The Atlas A first flew on 11 June 1957; the flight lasted only about 24 seconds before the rocket exploded. The first successful flight of an Atlas missile to full range occurred 28 November 1958. The first armed version of the Atlas, the Atlas D, was declared operational in January 1959 at Vandenberg, although it had not yet flown. The first test flight was carried out on 9 July 1959, and the missile was accepted for service on 1 September. The Titan I was another US multistage ICBM, with a successful launch February 5, 1959 with Titan I A3. Unlike the Atlas, the Titan I was a two-stage missile, rather than three. The Titan was larger, yet lighter, than the Atlas. Due to the improvements in engine technology and guidance systems the Titan I overtook the Atlas.

The R-7 and Atlas each required a large launch facility, making them vulnerable to attack, and could not be kept in a ready state. Failure rates were very high throughout the early years of ICBM technology. Human spaceflight programs (Vostok, Mercury, Voskhod, Gemini, etc.) served as a highly visible means of demonstrating confidence in reliability, with successes translating directly to national defense implications. The US was well behind the Soviets in the Space Race and so US President John F. Kennedy increased the stakes with the Apollo program, which used Saturn rocket technology that had been funded by President Dwight D. Eisenhower.

1965 graph of USAF Atlas and Titan ICBM launches, cumulative by month with failures highlighted (pink), showing how NASA's use of ICBM boosters for Projects Mercury and Gemini (blue) served as a visible demonstration of reliability at a time when failure rates had been substantial.

These early ICBMs also formed the basis of many space launch systems. Examples include R-7, Atlas, Redstone, Titan, and Proton, which was derived from the earlier ICBMs but never deployed as an ICBM. The Eisenhower administration supported the development of solid-fueled missiles such as the LGM-30 Minuteman, Polaris and Skybolt. Modern ICBMs tend to be smaller than their ancestors, due to increased accuracy and smaller and lighter warheads, and use solid fuels, making them less useful as orbital launch vehicles.

The Western view of the deployment of these systems was governed by the strategic theory of mutual assured destruction. In the 1950s and 1960s, development began on anti-ballistic missile systems by both the Americans and Soviets. Such systems were restricted by the 1972 Anti-Ballistic Missile Treaty. The first successful ABM test was conducted by the Soviets in 1961, which later deployed a fully operational system defending Moscow in the 1970s (see Moscow ABM system).

The 1972 SALT treaty froze the number of ICBM launchers of both the Americans and the Soviets at existing levels and allowed new submarine-based SLBM launchers only if an equal number of land-based ICBM launchers were dismantled. Subsequent talks, called SALT II, were held from 1972 to 1979 and actually reduced the number of nuclear warheads held by the US and Soviets. SALT II was never ratified by the US Senate, but its terms were honored by both sides until 1986, when the Reagan administration "withdrew" after it had accused the Soviets of violating the pact.

In the 1980s, President Ronald Reagan launched the Strategic Defense Initiative as well as the MX and Midgetman ICBM programs.

China developed a minimal independent nuclear deterrent entering its own cold war after an ideological split with the Soviet Union beginning in the early 1960s. After first testing a domestic built nuclear weapon in 1964, it went on to develop various warheads and missiles. Beginning in the early 1970s, the liquid fuelled DF-5 ICBM was developed and used as a satellite launch vehicle in 1975. The DF-5, with a range of 10,000 to 12,000 km (6,200 to 7,500 mi)—long enough to strike the Western United States and the Soviet Union—was silo deployed, with the first pair in service by 1981 and possibly twenty missiles in service by the late 1990s. China also deployed the JL-1 Medium-range ballistic missile with a reach of 1,700 kilometres (1,100 mi) aboard the ultimately unsuccessful type 92 submarine.

Post–Cold War

Deployment history of land-based ICBM, 1959–2014

In 1991, the United States and the Soviet Union agreed in the START I treaty to reduce their deployed ICBMs and attributed warheads.

As of 2016, all five of the nations with permanent seats on the United Nations Security Council have fully operational long-range ballistic missile systems; Russia, the United States, and China also have land-based ICBMs (the US missiles are silo-based, while China and Russia have both silo and road-mobile (DF-31, RT-2PM2 Topol-M missiles).

Israel is believed to have deployed a road mobile nuclear ICBM, the Jericho III, which entered service in 2008; an upgraded version is in development.

India successfully test fired Agni V, with a strike range of more than 5,000 km (3,100 mi) on 19 April 2012, claiming entry into the ICBM club. The missile's actual range is speculated by foreign researchers to be up to 8,000 km (5,000 mi) with India having downplayed its capabilities to avoid causing concern to other countries. On 15 December 2022, first night trial of Agni-V was successfully carried out by SFC from Abdul Kalam Island, Odisha. The missile is now 20 percent lighter because the use of composite materials rather than steel material. The range has been increased to 7,000 km.

By 2012 there was speculation by some intelligence agencies that North Korea is developing an ICBM. North Korea successfully put a satellite into space on 12 December 2012 using the 32-metre-tall (105 ft) Unha-3 rocket. The United States claimed that the launch was in fact a way to test an ICBM. (See Timeline of first orbital launches by country.) In early July 2017, North Korea claimed for the first time to have tested successfully an ICBM capable of carrying a large thermonuclear warhead.

In July 2014, China announced the development of its newest generation of ICBM, the Dongfeng-41 (DF-41), which has a range of 12,000 kilometres (7,500 miles), capable of reaching the United States, and which analysts believe is capable of being outfitted with MIRV technology.

Most countries in the early stages of developing ICBMs have used liquid propellants, with the known exceptions being the Indian Agni-V, the planned but cancelled South African RSA-4 ICBM, and the now in service Israeli Jericho III.

The RS-28 Sarmat (Russian: РС-28 Сармат; NATO reporting name: SATAN 2), is a Russian liquid-fueled, MIRV-equipped, super-heavy thermonuclear armed intercontinental ballistic missile in development by the Makeyev Rocket Design Bureau from 2009, intended to replace the previous R-36 missile. Its large payload would allow for up to 10 heavy warheads or 15 lighter ones or up to 24 hypersonic glide vehicles Yu-74, or a combination of warheads and massive amounts of countermeasures designed to defeat anti-missile systems; it was announced by the Russian military as a response to the US Prompt Global Strike.

In July 2023, North Korea fired a suspected intercontinental ballistic missile that is expected to land short of Japanese waters. The launch follows North Korea's threat to retaliate against the US for alleged spy plane incursions.

Flight phases

The following flight phases can be distinguished:

  1. Boost phase, which can last from 3 to 5 minutes. It is shorter for a solid-fuel rocket than for a liquid-propellant rocket. Depending on the trajectory chosen, typical burnout speed is 4 km/s (2.5 mi/s), up to 7.8 km/s (4.8 mi/s). The altitude of the missile at the end of this phase is typically 150 to 400 km (93 to 249 mi).
  2. Midcourse phase, which lasts approx. 25 minutes, is sub-orbital spaceflight with the flightpath being a part of an ellipse with a vertical major axis. The apogee (halfway through the midcourse phase) is at an altitude of approximately 1,200 km (750 mi). The semi-major axis is between 3,186 and 6,372 km (1,980 and 3,959 mi) and the projection of the flightpath on the Earth's surface is close to a great circle, though slightly displaced due to earth rotation during the time of flight. In this phase, the missile may release several independent warheads and penetration aids, such as metallic-coated balloons, aluminum chaff, and full-scale warhead decoys.
  3. Reentry/Terminal phase, which lasts two minutes starting at an altitude of 100 km; 62 mi. At the end of this phase, the missile's payload will impact the target, with impact at a speed of up to 7 km/s (4.3 mi/s) (for early ICBMs less than 1 km/s (0.62 mi/s)); see also maneuverable reentry vehicle.

ICBMs usually use the trajectory which optimizes range for a given amount of payload (the minimum-energy trajectory); an alternative is a depressed trajectory, which allows less payload, shorter flight time, and has a much lower apogee.

Modern ICBMs

Schematic view of a submarine-launched Trident II D5 nuclear missile system, capable of carrying multiple nuclear warheads up to 8,000 km (5,000 mi)

Modern ICBMs typically carry multiple independently targetable reentry vehicles (MIRVs), each of which carries a separate nuclear warhead, allowing a single missile to hit multiple targets. MIRV was an outgrowth of the rapidly shrinking size and weight of modern warheads and the Strategic Arms Limitation Treaties (SALT I and SALT II), which imposed limitations on the number of launch vehicles. It has also proved to be an "easy answer" to proposed deployments of anti-ballistic missile (ABM) systems: It is far less expensive to add more warheads to an existing missile system than to build an ABM system capable of shooting down the additional warheads; hence, most ABM system proposals have been judged to be impractical. The first operational ABM systems were deployed in the United States during the 1970s. The Safeguard ABM facility, located in North Dakota, was operational from 1975 to 1976. The Soviets deployed their ABM-1 Galosh system around Moscow in the 1970s, which remains in service. Israel deployed a national ABM system based on the Arrow missile in 1998, but it is mainly designed to intercept shorter-ranged theater ballistic missiles, not ICBMs. The Alaska-based United States national missile defense system attained initial operational capability in 2004.

ICBMs can be deployed from transporter erector launchers (TEL), such as the Russian RT-2PM2 Topol-M

ICBMs can be deployed from multiple platforms:

  • in missile silos, which offer some protection from military attack (including, the designers hope, some protection from a nuclear first strike)
  • on submarines: submarine-launched ballistic missiles (SLBMs); most or all SLBMs have the long range of ICBMs (as opposed to IRBMs)
  • on heavy trucks; this applies to one version of the Topol which may be deployed from a self-propelled mobile launcher, capable of moving through roadless terrain, and launching a missile from any point along its route
  • mobile launchers on rails; this applies, for example, to РТ-23УТТХ "Молодец" (RT-23UTTH "Molodets" – SS-24 "Scalpel")

The last three kinds are mobile and therefore hard to find. During storage, one of the most important features of the missile is its serviceability. One of the key features of the first computer-controlled ICBM, the Minuteman missile, was that it could quickly and easily use its computer to test itself.

Artist's concept of an SS-24 deployed on railway

After launch, a booster pushes the missile and then falls away. Most modern boosters are Solid-propellant rocket motors, which can be stored easily for long periods of time. Early missiles used liquid-fueled rocket motors. Many liquid-fueled ICBMs could not be kept fueled at all times as the cryogenic fuel liquid oxygen boiled off and caused ice formation, and therefore fueling the rocket was necessary before launch,This procedure was a source of significant operational delay, and might allow the missiles to be destroyed by enemy counterparts before they could be used. To resolve this problem Nazi Germany invented the missile silo that protected the missile from Strategic Bombing and also hid fuelling operations underground.

Although Soviet/Russia preferred ICBM designs that use hypergolic liquid fuels that can be stored at room temperature for more than a few years.

Once the booster falls away, the remaining "bus" releases several warheads, each of which continues on its own unpowered ballistic trajectory, much like an artillery shell or cannonball. The warhead is encased in a cone-shaped reentry vehicle and is difficult to detect in this phase of flight as there is no rocket exhaust or other emissions to mark its position to defenders. The high speeds of the warheads make them difficult to intercept and allow for little warning, striking targets many thousands of kilometers away from the launch site (and due to the possible locations of the submarines: anywhere in the world) within approximately 30 minutes.

Many authorities say that missiles also release aluminized balloons, electronic noise-makers, and other items intended to confuse interception devices and radars.

As the nuclear warhead reenters the Earth's atmosphere its high speed causes compression of the air, leading to a dramatic rise in temperature which would destroy it if it were not shielded in some way. As a result, warhead components are contained within an aluminium honeycomb substructure, sheathed in a pyrolytic carbon-epoxy synthetic resin composite material heat shield. Warheads are also often radiation-hardened (to protect against nuclear armed ABMs or the nearby detonation of friendly warheads), one neutron-resistant material developed for this purpose in the UK is three-dimensional quartz phenolic.

Circular error probable is crucial, because halving the circular error probable decreases the needed warhead energy by a factor of four. Accuracy is limited by the accuracy of the navigation system and the available geodetic information.

Strategic missile systems are thought to use custom integrated circuits designed to calculate navigational differential equations thousands to millions of FLOPS in order to reduce navigational errors caused by calculation alone. These circuits are usually a network of binary addition circuits that continually recalculate the missile's position. The inputs to the navigation circuit are set by a general-purpose computer according to a navigational input schedule loaded into the missile before launch.

One particular weapon developed by the Soviet Union – the Fractional Orbital Bombardment System – had a partial orbital trajectory, and unlike most ICBMs its target could not be deduced from its orbital flight path. It was decommissioned in compliance with arms control agreements, which address the maximum range of ICBMs and prohibit orbital or fractional-orbital weapons. However, according to reports, Russia is working on the new Sarmat ICBM which leverages Fractional Orbital Bombardment concepts to use a Southern polar approach instead of flying over the northern polar regions. Using that approach, it is theorized, avoids the American missile defense batteries in California and Alaska.

New development of ICBM technology are ICBMs able to carry hypersonic glide vehicles as a payload such as RS-28 Sarmat.

Specific ICBMs

Land-based ICBMs

A US Peacekeeper missile launched from a silo
Testing of the Peacekeeper re-entry vehicles at the Kwajalein Atoll. All eight fired from only one missile. Each line, if its warhead were live, represents the potential explosive power of about 300 kilotons of TNT, about nineteen times larger than the detonation of the atomic bomb in Hiroshima.
India's Agni-V ICBM launched from Abdul Kalam Island
  Operational
  Under development
  Decommissioned or cancelled
Type Minimum Range (km) Maximum Range (km) Country
LGM-30 Minuteman III
14,000 United States
RS-28 Sarmat
18,000 Russia
RT-2UTTH "Topol M" (SS-27)
11,000 Russia
RS-24 "Yars" (SS-29)
11,000 Russia
RS-26 Rubezh 6,000 12,600 Russia
UR-100N
10,000 Soviet Union/Russia
R-36 (SS-18) 10,200 16,000 Soviet Union/Russia
DF-4 5,500 7,000 China
DF-31 7,200 11,200 China
DF-5 5,000 9,000 China
DF-41 12,000 15,000 China
Hwasong-14 6,700 10,000 North Korea
Hwasong-15
13,000 North Korea
Hwasong-16
13,000 North Korea
Agni-V 7,000 10,000 India
Jericho III
11,500 Israel
LGM-35 Sentinel

United States
Agni-VI 10,000 16,000 India
Surya 12,000 16,000 India
LGM-30F Minuteman II
11,265 United States
LGM-30A/B Minuteman I
10,186 United States
LGM-118 Peacekeeper
14,000 United States
Titan II (SM-68B, LGM-25C)
16,000 United States
Titan I (SM-68, HGM-25A)
11,300 United States
SM-65 Atlas (SM-65, CGM-16)
10,138 United States
MGM-134 Midgetman
11,000 United States
RTV-A-2 Hiroc 2,400 8,000 United States
RT-2
10,186 Soviet Union
RT-23 Molodets
11,000 Soviet Union/Russia
RT-21 Temp 2S
10,500 Soviet Union
R-9 Desna
16,000 Soviet Union
R-16
13,000 Soviet Union
R-26
12,000 Soviet Union
MR-UR-100 Sotka 1,000 10,320 Soviet Union/Russia
UR-100
10,600 Soviet Union
UR-200
12,000 Soviet Union
RT-20P
11,000 Soviet Union
R-7 Semyorka 8,000 8,800 Soviet Union
Hwasong-13 1,500 12,000 North Korea

Russia, the United States, China, North Korea, India, Israel and Iran are the only countries currently known to possess land-based ICBMs.

A Minuteman III ICBM test launch from Vandenberg Air Force Base, United States

The United States currently operates 405 ICBMs in three USAF bases. The only model deployed is LGM-30G Minuteman-III. All previous USAF Minuteman II missiles were destroyed in accordance with START II, and their launch silos have been sealed or sold to the public. The powerful MIRV-capable Peacekeeper missiles were phased out in 2005.

A Soviet R-36M (SS-18 Satan), the largest ICBM in history, with a throw weight of 8,800 kg

The Russian Strategic Rocket Forces have 286 ICBMs able to deliver 958 nuclear warheads: 46 silo-based R-36M2 (SS-18), 30 silo-based UR-100N (SS-19), 36 mobile RT-2PM "Topol" (SS-25), 60 silo-based RT-2UTTH "Topol M" (SS-27), 18 mobile RT-2UTTH "Topol M" (SS-27), 84 mobile RS-24 "Yars" (SS-29), and 12 silo-based RS-24 "Yars" (SS-29).

China has developed several long-range ICBMs, like the DF-31. The Dongfeng 5 or DF-5 is a 3-stage liquid fuel ICBM and has an estimated range of 13,000 kilometers. The DF-5 had its first flight in 1971 and was in operational service 10 years later. One of the downsides of the missile was that it took between 30 and 60 minutes to fuel. The Dong Feng 31 (a.k.a. CSS-10) is a medium-range, three-stage, solid-propellant intercontinental ballistic missile, and is a land-based variant of the submarine-launched JL-2.

The DF-41 or CSS-X-10 can carry up to 10 nuclear warheads, which are MIRVs and has a range of approximately 12,000–14,000 km (7,500–8,700 mi). The DF-41 deployed underground in Xinjiang, Qinghai, Gansu and Inner Mongolia. The mysterious underground subway ICBM carrier systems are called the "Underground Great Wall Project".

Israel is believed to have deployed a road mobile nuclear ICBM, the Jericho III, which entered service in 2008. It is possible for the missile to be equipped with a single 750 kg (1,650 lb) nuclear warhead or up to three MIRV warheads. It is believed to be based on the Shavit space launch vehicle and is estimated to have a range of 4,800 to 11,500 km (3,000 to 7,100 mi). In November 2011 Israel tested an ICBM believed to be an upgraded version of the Jericho III.

India has a series of ballistic missiles called Agni. On 19 April 2012, India successfully test fired its first Agni-V, a three-stage solid fueled missile, with a strike range of more than 7,500 km (4,700 mi).

Agni-V during its first test flight

Missile was test-fired for the second time on 15 September 2013. On 31 January 2015, India conducted a third successful test flight of the Agni-V from the Abdul Kalam Island facility. The test used a canisterised version of the missile, mounted over a Tata truck. On 15 December 2022, first night trial of Agni-V was successfully carried out by SFC from Abdul Kalam Island, Odisha. The missile is now 20 percent lighter because the use of composite materials rather than steel material. The range has been increased to 7,000 km.

Submarine-launched ICBMs

Missile defense

An anti-ballistic missile is a missile which can be deployed to counter an incoming nuclear or non-nuclear ICBM. ICBMs can be intercepted in three regions of their trajectory: boost phase, mid-course phase or terminal phase. The United States, Russia, India, France, Israel, and China have now developed anti-ballistic missile systems, of which the Russian A-135 anti-ballistic missile system, the American Ground-Based Midcourse Defense and the Indian Prithvi Defence Vehicle Mark-II are the only systems having the capability to intercept and shoot down ICBMs carrying nuclear, chemical, biological, or conventional warheads.

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