Moscow appears to be maximising its gains while Joe Biden abandons long-held red lines at the end of his presidency.

Bryan Lanza tells the BBC there needs to be an "honest conversation" with Kyiv and returning Crimea is not a US priority.

Officials in Kyiv say they hit an oil processing facility in the occupied peninsula overnight.

Ukraine's military said it destroyed the Rostov-on-Don attack submarine in a missiles attack on Friday.

The attack, which left several injured, occurred on a port near the illegally-annexed Crimean peninsula.

Russia says US-made missiles programmed by American specialists were used in an attack which killed four.

The warehouse seen in satellite images was used to launch Iranian-made Shahed drones and train people, Kyiv said.

Pro-Kremlin media and Russian officials claim America is "getting dragged into" a war it will lose.