Russia's President Vladimir Putin has since said he agrees with the idea of a ceasefire in Ukraine, but added that "questions" remain about the nature of a truce.

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 United States drew closer to its G7 allies on Friday, at least momentarily, to back Ukraine's territorial integrity and warn Russia to follow Kyiv in accepting a ceasefire or face possible further sanctions.