US intelligence agencies believe that China is developing a new generation of nuclear weapons and has conducted at least one covert explosive test in recent years as part of a broader push to completely transform its nuclear arsenal into the world’s most technologically advanced,

Moscow reiterates willingness to adhere to expired nuclear weapons treaty, "as long as the United States does not exceed the aforementioned limits."

Remarks by a top administration official appeared to be aimed at dispelling skepticism of its assertions, as President Donald Trump vows to restart U.S. tests.

Kim Jong Un drove one of 50 fresh-off-the-line mobile rocket launchers delivered to the Korean People's Army Wednesday.

The U.S. Air Force has confirmed that the restructuring of the LGM-35A Sentinel intercontinental ballistic missile programme is expected to be completed by the end of 2026, with initial operational capability targeted for the early 2030s.

The expiration of the New START treaty has the US and Russia poised to increase the number of their deployed strategic nuclear weapons, pushing the world into dangerous territory.

The quiet collapse of nuclear stability,” Russia has built a nuclear arsenal containing, among other things, 1,500 tactical nuclear weapons. Tactical nuclear weapons are generally smaller than strategic nuclear weapons and are designed for use on battlefields rather than to annihilate a nation’s interior.

The U.S. Air Force expects its next-generation LGM-35A Sentinel nuclear missile to reach initial

The United States on Friday accused China of carrying out a secret nuclear test in 2020 as the Trump administration calls for a broader nuclear weapons agreement including both China and Russia.

This area, known as Lop Nur, or Lop Lake, is often likened by defence experts to Area 51, the fabled compound where the US tests its most classified and cutting-edge aircraft. Isolated and tightly controlled, Lop Nur is where the United States government has alleged that China has been conducting hidden nuclear explosive tests.

The U.S. and Iran are holding their second round of talks about Iran’s nuclear program Tuesday in Geneva as the United States ramps up its military presence in the Middle East and Iran holds large-scale maritime exercises.