Graphic drone footage appears to show dozens of Russian armored vehicles getting ambushed and destroyed during a single botched attack near the coal-mining town of Vuhledar in eastern Ukraine, which Moscow’s forces have been trying to capture for months. Vuhledar, a Ukrainian stronghold at the strategic intersection between the eastern and southern front lines, has seen some of the bloodiest fighting of the war as the Kremlin is gearing up for a decisive offensive on the eastern front. Based on the newly released video evidence, a column of dozens of tanks and armored vehicles was lost or damaged last week,...