His reaction to the truck attack in Berlin, and his disinterest in daily intelligence briefings, show a reckless indifference to Americans' safety.

Donald Trump's nomination of David Friedman as ambassador to Israel may finally clarify the U.S. position on Israel-Palestine.

His lies are a problem, but his belligerence is worse: It could start a war.

Exxon Mobil CEO Rex Tillerson could serve as a check on hawkishness.

Here's how Donald Trump can help—without a full-scale intervention.

His Taiwan call and other moves signal a shift from multilateral alliances to bilateral dealmaking. And it could destabilize the world.

By electing the Republican nominee, America has abdicated its role as the guarantor of the international liberal order.

Every year, nearly a thousand refugees from Africa, Asia, and the Middle East journey to Idaho to make a new life in America.

Two policy changes may have opened the door to the Istanbul airport bombing.

When it comes to foreign policy, the choice is simple.

Sanders has a new responsibility to drive the politics of national security in a better direction.