In time, a Ukrainian convoy passed by. The drone lifted off, chased down the convoy—and barreled toward a pickup truck whose bed was heavy with supplies. The drone’s video fee

Anatolii Khrapchynskyi, aviation expert and former officer in Ukraine’s Air Force, analyzes how Russia is developing its drone production and improving its UAV capabilities. Six months ago, Russia significantly increased the intensity of drone attacks on Ukrainian territory.

MOSCOW/KYIV — Russia and Ukraine continued aerial attacks on each other, officials said on Sunday, as the fate of a proposed ceasefire to the three-year-old conflict remained uncertain.