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 struck a sedate tone on Friday but acknowledged grounds for cautious optimism, after only backing the "idea" of a U.S. brokered 30-day ceasefire with firm caveats.

The resumption of U.S. military and intelligence aid for Ukraine follows a contentious White House meeting between the American and Ukrainian leaders, but Moscow is unlikely to agree to the proposed ceasefire.