Ukraine’s Centre for Strategic Communications and Information Security has denied claims that Kremlin leader Vladimir Putin’s helicopter came under attack from the Armed Forces of Ukraine in Russia’s Kursk Oblast.

Russia and Ukraine exchanged hundreds more prisoners Saturday as part of a major swap that amounted to a rare moment of cooperation in otherwise failed efforts to reach a ceasefire.

Reuters witnesses saw and heard successive waves of drones flying over Kyiv, and a series of explosions jolted the city.