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 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.

G7 nations emphasised on Friday the need for robust "security arrangements" to ensure a ceasefire between Ukraine and Russia, warning Moscow to follow Kyiv in agreeing a ceasefire or face further sanctions,