A thousand km north, on the Gulf of Finland, at least 10 Ukrainian drones were downed over the port of Ust-Luga in Russia's northern Leningrad region, with debris sparking fire at the Novatek-operated terminal - a huge Baltic Sea fuel export terminal and processing complex, the regional governor said.

Ukraine's air force said on Sunday Russia had launched a ballistic missile and 72 strike drones, plus several other decoy drones, in overnight attacks on the country. Ukrainian air defenses intercepted 48 of the drones, the air force said.