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.

US president Donald Trump said he hoped Moscow would "do the right thing" and agree to a 30-day ceasefire after the Russian president made a series of demands for concessions. "Now we're going to see whether or not Russia is there, and if they're not, it'll be a very disappointing moment for the world," Mr Trump said.

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.