The latest in a sustained Russian campaign of massive drone and missile attacks on Ukraine’s energy infrastructure brought power outages and restrictions in all the country’s regions Thursday, offici...

Since the summer, Ukraine’s long-range drone campaign has ramped up dramatically, pounding energy infrastructure across Russia and stretching Moscow’s air defenses thin.

Russia has recently used a missile whose secret development once triggered the U.S. withdrawal from a landmark nuclear arms control treaty, sources from Ukraine’s foreign ministry told Reuters. The revelation links a weapon central to Cold War-era security agreements directly to the war in Ukraine.