Russia and Ukraine trade overnight strikes; refinery set ablaze

Overnight strikes between Russia and Ukraine have killed at least one person and set fire to Russia's second-largest oil refinery.

The Kirishi refinery in the Leningrad region caught fire after a Ukrainian drone attack, regional governor Aleksandr Drozdenko said on Monday. The region is a major hub for Russia's oil and grain exports through the Baltic Sea.

The governor said air defences had shot down 113 Ukrainian drones, and that an apartment in Kirishi was damaged in the same overnight attack.

Russian forces, for their part, struck three power substations across Ukraine overnight and hit a cargo ship in the Black Sea that Moscow claimed was supplying arms to Ukrainian forces, Russian state news agencies reported.

Ukraine has repeatedly targeted Russian oil refineries in an effort to pressure the Kremlin and the Russian economy, while Russia has kept up regular attacks on Ukraine's energy and civilian infrastructure.

Separately, President Volodymyr Zelenskyy said Ukraine had agreed a new mechanism allowing European Union funds to be deployed more quickly in response to Russian attacks on its energy infrastructure.