No nuclear weapon has been deployed in war since the U.S. dropped atomic bombs on Hiroshima and Nagasaki in Japan in 1945, ...

The United States is not considering returning to Ukraine the nuclear weapons it gave up after the Soviet Union collapsed, White House national security adviser Jake Sullivan said Sunday.

T he United States is not considering returning to Ukraine the nuclear weapons the country previously agreed to give up under ...

When Israel launched its series of strikes against Iran last week, it also issued a number of dire warnings about the country ...

The military is considering a several options for how to respond if U.S.-Iranian negotiations crumble and they pursue a nuclear weapon.

The White House says Iran has all it needed to produce a nuclear weapon in "a couple of weeks" once given the go-ahead from Ayatollah Ali Khamenei.

US President Donald Trump dismissed an intelligence assessment by Director of National Intelligence Tulsi Gabbard that Iran ...

And in South Korea, officials have made noise in recent years about the possibility of obtaining nuclear weapons to counter their enemies in the North. As for the United States, it is not merely ...

A secret Russian satellite that US officials believe ... stock.adobe.com Although not a weapon itself, Cosmos 2553 was believed to aid Russia’s development of a nuclear anti-satellite weapon.