The crisis in Ukraine has countries formerly in Russia's orbit fearing Putin's next moves.

We’re still looking at a range of possibilities, including de-escalation and a great-power conflict.

Chaos creates countless opportunities for mistakes.

When the week began, the president faced questions about Ukraine. Now the inquiry has gone global.

Images from recent weeks, showing a region reshaped by a year of war

As Russia confronts Ukraine, the definition of modern military intervention hangs in the balance.

Before giving Kyiv the weapons that it needs, the U.S. always works through a list of excuses.

Whether we wish it or not, we are again in the world of war.

U.S. leaders need to talk to the Russians, not threaten them.