Moscow said it had retaken two villages outside the town of Sudzha in Russia’s Kursk region. Ukrainian officials did not immediately comment on the claim.

Russia and Ukraine traded heavy aerial blows overnight Saturday, with both sides reporting more than 100 enemy drones over their respective territories.

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.