Russia’s ability to keep making fuel at the normal pace is looking increasingly precarious following a surge in Ukrainian drone attacks on the nation’s oil refineries, including a fresh incident on Friday.

(Reuters) -Russian forces launched missiles on the centre of Ukraine's Black Sea port of Odesa, a UNESCO World Heritage site, seriously damaging historic buildings and injuring seven people, local officials said.

"This refinery is one of the 10 largest oil refineries in Russia in terms of design capacity and is involved in supplying the Russian occupatying army," the General Staff said in a statement.