Trump is making clear that he only respects countries with the power to devastate the U.S.

Two decades after India tested its nuclear weapons, the country still isn't in a position to do what the United States wants from it: help counter China.

Here's exactly what the U.S. loses as Trump scraps the Iran nuclear deal.

Trump and Netanyahu seem intent on kicking over the EU's carefully built international sandcastles. But can Europe play the long game?

The Israeli prime minister said the Iran deal "is based on lies.” Of course it is, says nuclear expert James Acton—but the U.S. knew that.

North Korea's announcement that it will be shutting down its nuclear tests is great news. But there's one giant caveat here.

The appointment of John Bolton as national security adviser makes it a lot more likely.

North Korea won't denuclearize, but the chances of a massively lethal calamity will drop.

Parsing "two minutes to midnight"

How Trump is increasing the risk of nuclear war

A summit in North Korea could offer the president a solution to the current crisis—really.

How the contest between capitalism and communism shaped world politics—and defines today’s inequalities.

The president may not stumble into a nuclear war, but he's setting the stage for a new era of proliferation.

Enabled by a craven Congress, the president is undermining the Iran deal and risking an escalation that he's incapable of halting.

For decades, leaders have used the nuclear threat to consolidate power at home—even when it is bad for national security.

Buried beneath the Great Plains lies a decommissioned Air Force control center that was once powerful enough to lay waste to the Soviet Union.