Newly declassified transcripts reveal that global leaders privately acknowledged the dangers of Pakistan’s nuclear arsenal ...

China is rapidly overhauling a network of secret facilities used to manufacture warhead components as it expands its nuclear stockpile faster than any other country, according to an analysis of ...

The debut followed the North’s first test of a new surface-to-air missile and the arrival of a U.S. nuclear-powered attack ...

China is estimated to have more than 600 nuclear warheads, a figure the U.S. predicts will exceed 1,000 by the end of the decade.

The country’s production of nuclear warheads has slowed, but its missiles may be poised to strike back fast in case of an ...

The United States and Iran traded barbs at the United Nations Security Council on Tuesday over conditions for reviving ...

Governments throughout East Asia and the rest of the international system are increasingly agitated about media reports alleging that an anonymous source in the ...

As tensions between Tehran and Washington have increased, Iran has accelerated its production of uranium to near ...

North Korea state media photos showed a largely completed nuclear-powered submarine hull as leader Kim Jong Un condemned ...

The United States openly tracks thousands of nuclear warheads, yet a small number have slipped permanently out of reach. Yes, ...

North Korea displayed apparent progress in the construction of a nuclear-powered submarine, with state media photos showing a ...

China's Foreign Ministry has fired a warning shot after a senior Japanese official suggested Tokyo should reconsider its nearly eight-decade ban on nuclear weapons in light of the worsening regional ...