As many as 80,000 Russian troops have been wounded or killed in less than six months of fighting in Ukraine, the Pentagon said Monday, the first time the U.S. military announced its estimates of the toll of the invasion on Russia. According to U.S. estimates, Russia has suffered 70,000 to 80,000 casualties, Colin Kahl, the undersecretary of defense for policy, told reporters at a press briefing Monday. In the days leading up to Russia’s Feb. 24 invasion, Western officials estimated that Russia had staged roughly 150,000 troops near Ukraine’s border.