Ukraine's General Staff says 20,000 Russian soldiers killed since Feb. 24.

Russian troops have also lost 756 tanks, 1,976 armored fighting vehicles, 366 artillery pieces, 122 multiple rocket launchers, 66 surface-to-air missiles, 163 jets, 144 helicopters, 8 ships, 76 fuel tanks, 135 drones, and 4 ballistic missile systems, the General Staff said on April 15.