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.

The remarks by the Russian leader suggested he wanted to draw out negotiations or make a truce impossible. Ukraine’s leader called the response to a cease-fire plan “manipulative.”

The barrage comes less than 24 hours after Russian President Vladimir Putin discussed details of the U.S. proposal for a 30-day ceasefire with a U.S. envoy.