Nuclear bombs do not rely on size, they rely on physics. Here is how chain reactions and hydrogen bombs unleash power on a ...

This year’s contributors to the Bulletin ’s “Voices of Tomorrow” section, which features essays and opinion pieces by rising experts, focused heavily on the threats posed by nuclear weapons. We also ...

Resuming full testing of nuclear weapons - as President Donald Trump called for last week - would be unnecessary, costly, undermine nonproliferation efforts, and empower the nation's adversaries to ...

After meeting with Israel's Netanyahu, Trump said he'd heard Iran is trying to rebuild its nuclear program, "and if they are, ...

President Donald Trump’s call for the United States to resume testing of nuclear weapons last week has experts scratching their heads. What did he really mean – exploding a warhead or testing delivery ...

A new map highlights the U.S. nuclear weapons sites that could be significantly impacted by the ongoing government shutdown. The National Nuclear Security Administration (NNSA), responsible for ...

During the campaign, Barack Obama promised to "stop the development of new nuclear weapons; work with Russia to take U.S. and Russian ballistic missiles off hair-trigger alert; seek dramatic ...

WASHINGTON (Reuters) -Iran has launched a speedy clean-up operation at a nuclear-related site in northern Tehran hit by Israeli airstrikes that will likely remove evidence of any nuclear weapons ...

Discussing nuclear weapons earlier this month, Chinese Foreign Ministry spokesperson Mao Ning said the nation “is committed to peaceful development, follows a policy of ‘no first use’ of nuclear ...

CFR scholars provide expert analysis and commentary on international issues. Erin D. Dumbacher is Stanton nuclear security senior fellow at the Council on Foreign Relations. President Donald Trump ...