Russian forces launched overnight strikes targeting critical and civilian infrastructure across parts of Ukraine on the night of May 15–16, with attacks reported in Odesa Oblast and Kharkiv, according to regional authorities.

Air raid alerts rang out across Ukraine as a massive swarm of attack drones crossed the Russian border shortly after 11:00 a.m. local time.

Russian forces struck energy infrastructure in Odesa Oblast on the evening of 14 May, with critical infrastructure facilities switched to backup power.