Ukrainian drones struck a major oil refinery in southern Russia and a fuel depot in the Rostov region overnight, Kyiv’s military confirmed via Telegram on Wednesday, continuing a relentless campaign to dismantle the energy infrastructure financing Moscow’s war effort. The latest barrage, which lit up the night sky over the Krasnodar region on December 17, targeted the Slavyansky Oil Refinery in Slavyansk-on-Kuban. Ukrainian defense officials stated the refinery was being used to supply fuel to Russian occupation forces. While…