Russia said it was working to repel a Ukrainian drone attack on Toropets, where there's a major military depot, as explosions lit up the night.

Russian President Vladimir Putin has warned NATO alliance leaders that a move to lift restrictions on Ukraine’s use of longer-range Western missiles to strike deep inside his country would be considered an act of war.

Russia said on Tuesday it had repelled five new attempts by Ukrainian forces to smash through its border into the Kursk region, bringing the total number of reported attacks on the border to 26 in just the past six days.