From Wikipedia, the free encyclopedia
 
Soviet Union
Russian Federation
Location of Soviet Union Russian Federation
Nuclear program start date1943
First nuclear weapon testAugust 29, 1949
First fusion weapon testAugust 12, 1953
Last nuclear testOctober 24, 1990
Largest yield test50 Mt (210 PJ) (Tsar Bomba, October 30, 1961)
Total tests715 detonations
Peak stockpile68,000 warheads (1990)
Current stockpile (usable and not)6,500
Current strategic arsenal1,600
Cumulative strategic arsenal in megatonnage663.5-801.5 (2016.est)
(Variability occurs because of uncertainty about SS-18 yields) 
Maximum missile rangeIntercontinental up to 16,000 kilometers
NPT partyYes (1968, one of five recognized powers)

According to the Federation of American Scientists, an organization that assesses nuclear weapon stockpiles, as of 2018, the Russian Federation possesses 7,850 total nuclear warheads, of which 1,600 are strategically operational. This is in large part due to the special bomber counting rules allowed by the New START treaty, which counts each strategic nuclear bomber as one warhead irrespective of the number of warheads—gravity bombs and/or cruise missiles carried by the aircraft. The figures are, by necessity, only estimates because "the exact number of nuclear weapons in each country's possession is a closely held national secret." In addition to nuclear weapons, Russia declared an arsenal of 39,967 tons of chemical weapons in 1997. The Soviet Union ratified the Geneva Protocol on April 5, 1928 with reservations. The reservations were dropped on January 18, 2001. Russia is also party to the Biological Weapons Convention and the Chemical Weapons Convention. The Soviet Union had a peak stockpile of 45,000 nuclear warheads in 1986. It is estimated that from 1949 to 1991 the Soviet Union produced approximately 55,000 nuclear warheads.

Nuclear weapons