Biden promised a more humane foreign policy, but advocates of sanction reform are waiting to see concrete action.

The latest bad-faith attacks on Biden’s climate envoy show that the GOP is determined to find the next #Benghazi.

The assassination of nuclear scientist Mohsen Fakhrizadeh is a reminder of how badly the U.S. needs a new approach to Iran. Is Biden up to the task?

But beyond this week’s false headlines, Trump’s double-dealings and war threats have given Tehran every reason to develop a bomb.

His dim tweets and rash threats have pinned the U.S. in a corner with Tehran.

The predictable result of the Trump administration's incoherent foreign policy

Lessons from a 2016 naval crisis that could have sunk the nuclear deal and opened a conflict, but didn’t.

When it comes to Iran, Israel, and Latin America, Democratic leaders are closer in mindset to the Trump administration than you might think.

This week's summit in Warsaw is a pale imitation of a serious effort three decades ago.

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

Donald Trump’s decision to leave the Iranian nuclear deal continues a rich tradition of U.S. fecklessness.

One small step for Trump—and one giant blow to American diplomacy. The repercussions of reneging on the Iran deal may last for years.

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.

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

He campaigned with a lot of swagger. But his first nine months in office have been defined by indecision, vacillation, and a reluctance to call shots.

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

Bernie Sanders's speech at Westminster College was an attempt to break through the calcified ideologies of the national security establishment.