Ukrainian Drones Strike Yaroslavl Oil Refinery and Rostov-on-Don on Night of Ceasefire Announcement

On the night of May 9, as the Trump-brokered ceasefire was formally announced, Ukrainian drones struck an oil refinery in Yaroslavl (approximately 1,000 km from Ukraine) and triggered explosions near defense-linked sites in Rostov-on-Don. The Yaroslavl refinery strike caused a fire visible from several kilometers away. These strikes extended Ukraine's ongoing deep-strike campaign that included the Perm refinery (struck May 8, the third time in two weeks) and the Caspian Sea naval base in Kaspiysk (May 8). The near-simultaneous strikes on critical Russian energy and logistics infrastructure — paired with the ceasefire announcement — put both the timing and Ukraine's intent under intense scrutiny, with Ukrainian officials framing the attacks as retaliation for Russia's continued attacks during prior Ukrainian-declared ceasefires.