Russia has lost 463,930 troops in Ukraine since the beginning of its full-scale invasion on Feb. 24, 2022, the General Staff of Ukraine's Armed Forces reported on April 26.This number includes 950 casualties Russian forces suffered over the past day.According to the report, Russia has also lost 7,262  tanks, 13,957 armored fighting vehicles, 15,984 vehicles and fuel tanks, 11,867 artillery systems, 1,049 multiple launch rocket systems, 772 air defense systems, 348 airplanes, 325 helicopters, 9,461 drones, 26 ships and boats, and one submarine.Sumy Oblast fortifies amid looming threat of Kharkiv attackA group of military officers, local police chiefs, border guards, emergency service workers, and farmers gather around a map of Sumy Oblast’s Myropillia community in an undisclosed location around a mile from Russia.