Drones targeted a major oil refinery in Yaroslavl, while Orthodox priests in Perm held a prayer procession for protection after repeated UAV strikes on oil infrastructure.

Ukraine launched a massive overnight drone assault targeting the Moscow region, hitting a major oil refinery, a strategic fuel hub, and a key electronics technology park.

Explosions were reported in the Russian city of Yaroslavl on the morning of May 19, according to local Russian media and officials, following a reported drone attack.