Russia launched a massive drone assault on Ukraine, killing nine and targeting critical infrastructure, while Ukraine responded with its own drone strikes on Russian energy facilities and a port, causing injuries and fires.

A drone strike, reportedly by Ukraine, triggered a fire at Russia's major Baltic port of Ust-Luga, a key oil exporting hub, causing new damage after being hit for a second time in days, with regional governor Alexander Drozdenko reporting 36 drones shot down.