Even before the election of Donald Trump, a world without the United States as its sole superpower was coming into focus. What's next could be worse.

Trump wants to undo the Iran deal despite potential consequences, ranging from U.S. isolation to Iranian nuclear proliferation.

U.S. commanders say strikes on ISIS militants are proportionate, but eyewitnesses and on-the-ground researchers report devastating civilian losses.

In the Idlib province in Syria, refugees are living in uneasy peace, but they fear being caught in an assault by the Assad regime on the Islamist stronghold.