Russia and Ukraine exchanged hundreds more prisoners on Saturday as part of a major swap that amounted to a rare moment of cooperation in otherwise failed efforts to reach a ceasefire. The exchange came hours after Kyiv came under a large-scale Russian drone and missile attack that left at least 15 people injured.

Russian air defense units intercepted en route to Moscow overnight on May 25, according to Moscow Mayor Sergey Sobyanin. Sobyanin's claims came as Russia launched a large-scale aerial attack against Kyiv and other Ukrainian cities for the second night in a row.