China is at once quite transparent and opaque regarding its nuclear arsenal and posture, reflecting the fact that transparency is a function of perspectives in terms of its definition, scope, degree, and form.
On one hand, China’s views on the role of nuclear weapons in its national defence, in international politics, and in terms of their employment are well documented in official statements and white papers. China has become more open over time, even regarding nuclear policy, nuclear weapons, and nuclear arms control and disarmament, albeit still in discrete areas.
On the other hand, China has neither affirmed nor denied specifics related to the size of its nuclear arsenal, the types and payloads of its nuclear weapons and delivery vehicles, nor production facilities for its weapons-grade fissile materials (however, see the category ‘delivery vehicle types’ for discussion of specific Chinese transparency practices in that area).
Since 16 October 1964, when it conducted its first nuclear test, Beijing has always maintained that its nuclear weapons development is largely driven by the need to respond to external forms of nuclear coercion and blackmail. Over the years, Beijing has upheld three basic principles that guide its nuclear policy. These are no-first-use (NFU) of nuclear weapons, a limited arsenal, and support of nuclear disarmament. The role of nuclear weapons as stipulated in Beijing’s official positions is purely defensive and retaliatory, rather than warfighting. These positions persisted throughout the more than six decades since China acquired nuclear weapons.
This level of transparency, in terms of broad policy, general principles, and consistency, is informed by Beijing’s diplomatic practices of presenting general principles rather than outlining specific actionable plans on many international issues. For example, according to a Chinese white paper published in November 2025, entitled ‘Arms Control, Disarmament, and Nonproliferation in the New Era,’ nuclear transparency practices ‘should be conducive to strategic mutual trust, take full account of the security environment and interests of each country, and be implemented by themselves voluntarily in accordance with their national conditions.’ The white paper also stated, ‘Given the current international security situation, transparency in intentions and policies is of the most practical significance’ and that its ongoing commitment to a no-first-use policy on nuclear weapons ‘is the most practical measure of transparency.’
This explains Beijing’s approach of emphasizing the merit of its NFU policy and challenging the other nuclear weapon states — meaning specifically the five countries defined in the Nuclear Non-Proliferation Treaty (NPT) — to adopt the same position. Indeed, Beijing has proposed an international treaty on NFU; it ‘encourages the five nuclear-weapon States to negotiate and conclude a treaty on “mutual no-first-use of nuclear weapons” or issue a political statement in this regard’.
This practice of advocating general principles also applies to China’s approach to military applications of AI. Beijing calls for caution and restraint in this realm and proposes ideas for AI governance. However, these ideas are generally formulated in terms of broad principles rather than specific proposals. For example, an official Chinese government summary of a 2024 meeting between Chinese President Xi Jinping and then-US President Joe Biden noted ‘The two Presidents affirmed the need to maintain human control over the decision to use nuclear weapons, and they stressed the need to seriously consider potential risks and adopt a prudent and responsible attitude when developing AI for the military domain.’
The decision not to provide specific details on the circumstances under which it will consider the use of nuclear weapons is underpinned by the belief that not revealing critical information provides certain advantages, such as maintaining an element of surprise, and not restricting one’s freedom of action in future. This aligns with the general principle of ‘active defence’ where ‘China pursues the defensive policy featuring self-defense and gaining mastery by striking only after the enemy has struck’.
Another feature of Chinese approaches to nuclear transparency is an emphasis on holistic and strategic, rather than technical and isolated, views of one’s strategic environment. This may also help to explain China’s decision not to disclose, for the most part, the numbers, types, and yields of its nuclear weapons and delivery systems.
China’s nuclear arsenal remains much smaller than the two largest nuclear-armed states, albeit it is growing and improving. China also has to consider the conventional capabilities of potential adversaries, as well as their space and missile defence capabilities, and emerging and disruptive technologies that are being integrated into the nuclear enterprise, all of which may pose serious threats to its second-strike capabilities.
A key consideration for China in determining its transparency policies, as noted in the 2025 white paper on arms control, is that transparency practices should ‘be implemented by [countries] voluntarily in accordance with their national conditions.’ In this regard, it seems that China’s leaders have yet to be convinced that transparency can be beneficial for the country’s national security. One situation China wants to avoid is being entrapped in a position of technical inferiority. In this context, Beijing is especially adamant in rejecting recent US attempts to include China in a trilateral nuclear arms control negotiation. At a Foreign Ministry press conference on 27 August 2025, spokesperson Guo Jiakun said, ‘China’s nuclear strength is by no means on the same level with that of the U.S. Our nuclear policy and strategic security environment are also completely different. It’s neither reasonable nor realistic to ask China to join the nuclear disarmament negotiations with the U.S. and Russia’.
Official sources
- ^ State Council Information Office (PRC), ‘China’s National Defense in the New Era’, 24 July 2019, http://english.scio.gov.cn/2019-07/24/content_75026800.htm
- ^ State Council Information Office (PRC), ‘China’s Military Strategy’, 27 May 2015, https://english.www.gov.cn/archive/white_paper/2015/05/27/content_281475115610833.htm
- ^ State Council Information Office (PRC), ‘The Diversified Employment of China’s Armed Forces’, 16 April 2013, http://eng.mod.gov.cn/2025xb/M/P_251591/16415092.html
- ^ State Council Information Office (PRC), ‘China’s National Defense in 2010’, 31 March 2011, https://english.www.gov.cn/archive/white_paper/2014/09/09/content_281474986284525.htm
- ^ State Council Information Office (PRC), ‘China's Arms Control, Disarmament, and Nonproliferation in the New Era’, 27 November 2025. https://web.archive.org/web/20251207211339/https://www.mfa.gov.cn/eng/xw/wjbxw/202511/t20251127_11761653.html
- ^ Ministry of Foreign Affairs (PRC), ‘Global AI Governance Action Plan’, 26 July 2025, https://www.fmprc.gov.cn/mfa_eng/xw/zyxw/202507/t20250729_11679232.html
- ^ Ministry of Foreign Affairs (PRC), ‘No-first-use of Nuclear Weapons Initiative’, 23 July 2024, https://www.mfa.gov.cn/eng/xw/wjbxw/202407/t20240723_11458632.html
- ^ ‘Foreign Ministry Spokesperson Guo Jiakun’s Regular Press Conference on August 27, 2025’, https://www.fmprc.gov.cn/eng/xw/fyrbt/lxjzh/202508/t20250827_11696776.html
- ^ Information Office of the State Council of the People's Republic of China, ‘China’s National Defence’, July 1998, http://www.china.org.cn/e-white/5/index.htm
- ^ ‘An Overview of the Meeting Between Chinese and US Presidents in Lima by Foreign Ministry Spokesperson’, Ministry of Foreign Affairs (PRC), 17 November 2024. https://web.archive.org/web/20241126015351/https://www.mfa.gov.cn/eng/xw/fyrbt/202411/t20241117_11527715.html