x     Ukraine on Thursday launched one of its largest drone attacks on Moscow since the start of the Russian invasion in 2022, hitting the capital's oil refinery in the Kapotnya district, covering the city in black smoke and forcing the closure of its four airports. It was the second strike on that facility —run by a subsidiary of state-owned Gazprom— in a week. Ukraine's General Staff confirmed the attack and reported at least five fires at the plant, where processing units and a storage tank