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How many nuclear weapons are there in the world and who has the most?

The United States is to resume nuclear weapons testing “immediately”, Donald Trump has announced, raising fears of renewed proliferation between the world’s two biggest stockpiles of atomic weaponry.
StrategyPage

NBC Weapons: French and British Nuclear Weapons

October 29, 2025: Of the 32 NATO members, three have nuclear weapons and SSBNs (ballistic missile nuclear-powered submarines). In addition to the United States, Britain and France also have about 500 ...
The National Interest

Inside Project Astraea: The Nuke That Could Redefine Britain’s Power

According to the British Ministry of Defence, Project Astraea is moving forward as planned under the Strategic Defence Review 2025 program. In a written parliamentary response in the progress of ...
The National Interest

The UK’s Nuclear Arsenal Is Tiny—but Big Enough for Deterrence

The United Kingdom always keeps at least one nuclear-armed submarine on patrol at any given time, giving London a perpetual second-strike capability against any adversary. One could be forgiven for ...
Science News

If another country tested nuclear weapons, here’s how we’d know

President Donald Trump has called for the United States to test its nuclear weapons for the first time in three decades. But Trump’s statements about testing — in particular, whether other nations are ...
Science News

Here’s the science behind nuclear weapons testing

Nuclear weapons tests were once a regular occurrence, but most countries haven’t tested in decades, following the adoption of the Comprehensive Nuclear-Test-Ban Treaty in 1996. Now, that moratorium ...