As peace efforts fail to bear fruit, the Russian leader threatens Odesa and Mykolaiv - and warns of wider war on Europe.

Talks to take place in Moscow amid renewed diplomatic push to end long-running war.

Russian President Vladimir Putin doubled down on threats toward Europe ahead of peace talks with the U.S., saying Moscow was "ready" for war.

As peace efforts fail to bear fruit, the Russian leader threatens Odesa and Mykolaiv - and warns of wider war on Europe.