Ukraine launched a massive drone strike deep into Russia, hitting airbases and destroying over 40 bombers in its longest-range operation since the war began, according to officials.

Russia has lost more than one million troops in Ukraine since the beginning of its full-scale invasion, the Ukrainian military has claimed. The claim by the General Staff of the Ukrainian armed forces is in line with Western intelligence estimates and underlines the huge price paid by Moscow for its three-year-old invasion.