Ukraine-U.S. Summit in Saudi Arabia On March 11, U.S. and Ukrainian delegations met in Jeddah, Saudi Arabia, for a critical round of negotiations to reset a heated diplomatic relationship and try to work out terms to end the war that began when Russia invaded Ukraine three years ago.

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.

Russia and Ukraine continued aerial attacks on each other, inflicting injuries and damages, officials said early on Sunday, as the fate of a proposed ceasefire to the three-year-old war remained uncertain.