The warring sides also exchanged prisoners in one of the few results of talks last week, and Russia reported new attacks on the front line.

The Ukrainian air force says Russia launched 479 drones at the country in the war’s biggest overnight drone bombardment

Ukraine’s shock drone strike on Russia’s strategic bomber fleet this week has generals and analysts taking a new look at threats to high-value United States aircraft at bases in the homeland and abroad – and the situation is worrisome.