The president’s visit to Ukraine was a gut punch to the Russian leader.

Ukraine is not on the verge of collapse. That makes the Trump administration’s decisions particularly shortsighted and tragic.

Putin should pay for the damage his invasion has caused, and the money is needed immediately.

Images from recent months, showing a region reshaped by two years of war

Making strategy by dubious analogy is a bad idea.

Last year, the nation’s military prowess impressed the world. But reclaiming territory presents new challenges.

Ukraine wants long-range missiles in order to regain Crimea and end the war. Why won’t Washington supply them?

Plus: What the U.S. has at stake in the war in Ukraine

The war in Ukraine is reaching a crucial moment. Will it recapture the world’s flagging attention?

The sham referendum in Ukraine was for domestic consumption.