Trump said he had a “very good telephone call" with Ukrainian President Volodymyr Zelenskyy "to align both Russia and Ukraine" on their "requests and needs.”

The last time Ukraine signed a peace accord with Russia, 10 years ago, it brought only sporadic violence, mounting distrust, and eventually full-scale war. Here’s what we can learn from that history.

After Moscow and Kyiv agree to stop hitting each other's power plants and electric grids, negotiators will try to halt fighting on the Black Sea.