Status of World Nuclear Forces

^a“军事储备”中的弹头被定义为军事拘留的弹头，并指定军队使用。
^bThe “total inventory” counts warheads in the military stockpile as well as retired, but still intact, warheads awaiting dismantlement.
^c这个数字高于新开始条约因为该表也可以在部署的轰炸机基地计算轰炸机武器。Detailed overview of Russian forces as of 2022 is here. Numbers have been updated for later changes.
^dAll are declared to be in central storage, although some storage sites may be close to bases with operational forces. Many retired non-strategic warheads are thought to be awaiting dismantlement.
^eIncludes an estimated 999 strategic warheads and all 1,816 non-strategic warheads.
^fIn addition to the 4,489 warheads in the military stockpile, an estimated 1,400 retired warheads are thought to be awaiting dismantlement. Public details are scarce, but we estimate that Russia is dismantling 200-300 retired warheads per year. The future of the Russian stockpile size is debated: US Strategic Command and part of the Intelligence Communityclaim“Russia’s overall nuclear stockpile is likely to grow significantly over the next decade – growth driven primarily by a projected increase in Russia’s non-strategic nuclear weapons.” Others privately disagree. A major uncertainty is how many tactical weapons will be replaced by new nuclear versions versus conventional weapons.See 2022 overview of Russian forces here.
^gThis number is higher than the aggregate data released under theNew START databecause this table also counts bomber weapons on bomber bases as deployed.Detailed overview of 2023 U.S. forces is here.
^hApproximately 100 B61 bombs are deployed in Europe at six bases in five countries (Belgium, Germany, Italy, Netherlands, and Turkey).
ⁱNon-deployed reserve includes an estimated 1,670 strategic and 100 non-strategic warheads in central storage.
^jThe U.S. government宣布2018年3月，其储备包括2017年9月的3,822弹头。此后，Trump administration decided不再解密数字。2021年，拜登管理declassifiedthe number of warheads in the stockpile and the number of dismantled warheads, noting that the stockpile consisted of 3,750 warheads as of September 2020. Since then, additional warheads have been retired for an estimated stockpile of approximately 3,700 warheads.
^kIn addition to the roughly 3,700 warheads in the military stockpile and the approximate 1,500 retired warheads awaiting dismantlement, roughly 20,000 plutonium cores (pits) and some 4,000 Canned Assemblies (secondaries) from dismantled warheads are in storage at the Pantex Plant in Texas and Y-12 plant in Tennessee. For a detailed 2023 overview of U.S. forces,看这里.
^lWeapons for France’s single aircraft carrier are not deployed on the ship under normal circumstances but could be on short notice. Warhead loadings on some submarines missiles have been reduced to increase targeting flexibility. For a detailed overview of French nuclear forces,看这里).
^m中国库存正在增加，2022年美国国防部claimed,到2030年中国的核储备”about 1,000 operational nuclear warheads.” Part of that increase is already well underway and our estimate includes some of it; however, these claims depend on many uncertain factors, including how many missile silos will be built, how many warheads each missile will carry, and assumptions about the future production of fissile materials by China. None of the warheads are thought to be fully deployed but kept in storage under central control. China considers all of its nuclear weapons to be strategic, but the US military calls its medium-and intermediate-range missile non-strategic. Our detailed 2023 overview of Chinese nuclear forces ishere.
ⁿ英国核弹头的数量在每个潜艇was lowered from 48 to 40. This lowered the number of “operationally available” warheads from 160 to 120. The plan was to reduce the stockpile to “not more than 180” by the mid-2020s, but the Johnson government于2021年宣布that it would increase the stockpile to “no more than 260 warheads.”Detailed overview of UK nuclear forces here.
^o尽管以色列为100-200枚弹头生产了足够的p，但美国情报界的交付平台和估计数量表明，库存可能包括大约90枚弹头。详细的2021概述.
^pEstimating the number of Pakistani warheads comes with great uncertainty because neither Pakistan nor western governments provide public information. None of Pakistan’s warheads are thought to be mated with missiles but kept in central storage, most in the southern parts of the country. More warheads are in production.详细的2021概述.
^q估计印度弹头的数量存在很大的不确定性，因为印度和西方政府都没有提供公共信息。尽管努力提高准备就绪，但我们估计印度核弹头并不与导弹交配，而是在中央存储中。轰炸机武器可能会在相对较短的通知中使用。更多的弹头正在生产中。详细的2022概述此处.
^rAfter six nuclear tests, including two of 10-20 kilotons and one of more than 150 kilotons, we estimate that North Korea might have produced sufficient fissile material for roughly 50-70 warheads. The number of assembled warheads is unknown, but lower. We estimate that North Korea might have approximately 30 assembled warheads for short- and medium-range missiles, although this number is certainly increasing.详细的2022概述此处.
^sNumbers may not add up due to rounding and uncertainty about the operational status of the four lesser nuclear weapons states and the uncertainty about the size of the total inventories of three of the five initial nuclear powers.