The Tsar Bomba's explosion was unparalleled in power. With a 50 megaton capacity, this nuclear test was estimated to be 3,800 times the strength of the Hiroshima atomic bomb. And although short video ...

There is more fallout from a Russian missile strike in northeastern Ukraine that killed dozens of civilians on Palm Sunday.

Imagine the power of the bomb dropped on Hiroshima in 1945 and then multiply it by 670,000 times. Terrifying doesn't really ...

The decades-long struggle to find a permanent place to dispose of nuclear waste will continue, probably for many years to ...

President Donald Trump's pick to lead the National Nuclear Security Administration (NNSA) says he will oppose resuming ...

Khamenei refuses to capitulate to U.S. threats. The time for diplomatic engagement may be over.

The National Nuclear Security Administration said development for a bomb 24 times more powerful than the one dropped on ...

Iranian Foreign Minister Abbas Araqchi says upcoming talks with the U.S. could guarantee results but "wall of mistrust" ...

Israeli Prime Minister Benjamin Netanyahu is meeting with President Donald Trump in Washington, becoming the first foreign leader to visit Trump since he unleashed tariffs on countries around the ...

MOSCOW (Reuters) -Russia has warned that strikes against Iran's nuclear infrastructure would have "catastrophic" consequences, after U.S. President Donald Trump threatened to bomb Iran unless it ...

The threat comes days after Trump warned Iran he would bomb in a manner “never seen before” should it not sign off on a nuclear weapons deal. Trump sent a letter to Iran’s supreme leader, Ali Khamenei ...

US President Donald Trump threatened to bomb Iran if it did not come to an agreement with Washington over its nuclear programme. Meanwhile, Iran is reportedly preparing its underground missile ...