The head of the U.N. nuclear watchdog agency says Iran's enriched uranium "is still there," as he stresses the urgency of diplomacy to avert a U.S.-Iran war.

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,

Estonia's foreign minister has signaled the eastern NATO member was open to having nuclear weapons stationed on its soil.

US intelligence agencies believe China is developing a “new generation” of nuclear weapons — with Beijing having reportedly conducted at least one undisclosed explosive test already. China’s plan to radically advance its nuclear capabilities — beyond its 600 operational warheads — could mean a severe shift in its overall nuclear strategy,

The allegations were leveled by U.S. officials late last week. Arms control experts worry that norms against nuclear testing are unraveling.

The report will likely spark fears the world could inch closer to a new conflict, with CNN reporting sources who said China also appears to be developing low-yield, tactical nuclear weapons for the first time.

Satellite imagery of secretive nuclear facilities reveals Beijing’s efforts to expand its arsenal, just as the last global guardrails on nuclear weapons vanish.

Poland should have its own nuclear weapons programme, given the threat posed by Russia, President Karol Nawrocki has said. Speaking to broadcaster Polsatnews on Sunday evening, Naworcki said "the

If diplomatic efforts to end Iran’s nuclear program fail, the president’s appetite for a potentially lengthy war will be tested.