Will toughness on Iran help Trump with North Korea? Here are three reasons to doubt it.

Leaders aren’t necessarily sending the signals they think they’re sending.

For Trump, the art of the deal isn’t the art of diplomacy

To succeed, talks with North Korea will need skilled diplomats.

Obama’s symbolic visit to Cuba is the exception. What’s the real history of presidents and international travel?

We remember Nixon in China and Kennedy in Berlin, but most presidential visits these days are far more ordinary.