Ukraine's President Volodymyr Zelensky has accused Vladimir Putin of trying to "sabotage" diplomatic efforts to secure an immediate ceasefire. In a post on social media, he urged the US to put more pressure on the Russian president,

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.