The Buzz

China's Nuclear Weapons Arsenal Could Grow Massively in the Coming Years

This isn’t meant to suggest that China is going to substantially overhaul the size of its nuclear arsenal overnight. If history is any guide, China is likely to build up its arsenal in a cautious, methodical manner. Nonetheless, it is undeniable that China’s nuclear arsenal is going to get larger in the years ahead, and U.S. nuclear and arms-control strategy must account for this fact.

One of the most consistent aspects of China’s military policy is likely to undergo a significant transformation. Since its first nuclear test in 1964, China has maintained a relatively small nuclear arsenal designed to hold adversaries’ population centers at risk. Even as it has modernized its conventional forces to “fight and win wars” against first-class militaries like that of the United States, China’s nuclear arsenal is estimated to contain just 264 warheads, far smaller than the 1,550 strategic nuclear warheads Russia and America will each deploy under the New START Treaty, to say nothing of the nearly thirty thousand warheads they maintained during the Cold War.

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This smaller arsenal is consistent with China’s different perspective about the nature of deterrence, as well as its no-first-use nuclear doctrine. At the same time, a couple of technical developments are likely to propel China to undertake a significant nuclear buildup in the coming years.

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The first of these is China’s acquisition of a viable nuclear triad for the first time. For most of its history as a nuclear power, Beijing has primarily relied on single-warhead land-based ballistic missiles to deliver its nuclear weapons. After decades of false starts, however, China has now deployed a sea-based deterrent in the form of the JIN-class (Type 094) nuclear-powered ballistic-missile submarines (SSBNs). China has already commissioned four JIN-class SSBNs and will build at least another one of these vessels. Each Jin-class SSBN has twelve missile tubes and carries JL-2 submarine-launched ballistic missiles (SLBMs), which have a range of 7,500 kilometers. Some reports suggest the JL-2 can be equipped with Multiple Independently Targetable Reentry Vehicles (MIRVs) that allow each missile to carry between two and eight warheads. Thus, the five Jin-class SSBNs will require somewhere between sixty and 480 nuclear warheads. Even the low end of this estimate represents nearly one-quarter of China’s estimated warheads.

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Furthermore, according to the Pentagon, China will begin fielding its next-generation SSBN, the Type 096, sometime in the coming decade, and these will be armed with the JL-3 SLBM. It’s unclear how many Type 096 SSBNs China will build, and whether the JL-3 SLBM will carry multiple warheads or not, but current reports suggest the Type 096 sub will have twenty-four launch tubes. Assuming China also builds five Type 096 subs and each JL-3 only carries one warhead, this will require 120 nuclear warheads, nearly half of China’s estimated arsenal. Including the low-end estimate of the number of warheads the Type 094 SSBN will consume, Beijing’s sea-based deterrent will account for at least 75 percent of its entire stockpile.

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