Ukraine deployed nearly 200 drones in a massive assault on Moscow on Thursday, marking the largest aerial strike on the Russian capital since the war's full-scale invasion began. The attack set a major oil refinery ablaze and temporarily forced evacuations at Russia's largest airport.

The primary target was the Kapotnya oil refinery in Moscow's southeastern district, a facility that supplies approximately 40 percent of the capital's petrol and roughly half of its diesel fuel. Video footage captured a fuel tank detonating explosively, with flames consuming one of Moscow's most critical energy infrastructure sites. Beyond the refinery, Ukrainian drones struck a shopping center, residential buildings, industrial facilities and private homes. Russian authorities reported at least 17 people injured in the strikes.

The scale of this attack suggests Ukraine has significantly strained Moscow's air defense systems, which are the densest in Russia. Online videos showed Ukrainian drones flying over the capital with minimal interception, indicating some weapons successfully penetrated the layered defenses. Footage also captured Russian operators attempting last-minute countermeasures, including one soldier firing a shoulder-launched missile moments before a drone hit the refinery.

Ukraine appears to have employed a mix of conventional propeller-driven long-range drones alongside newer jet-powered missile systems. These faster, harder-to-intercept weapons, including the recently unveiled Bars hybrid drone-cruise missile, pose growing challenges for Russian air defenses. Moscow faces constraints in deploying its defensive systems in densely populated areas, where interceptor misses or falling debris could cause significant civilian casualties.

Residents in areas east of Moscow reported an unusual phenomenon following the refinery strike. Black rain, an oily residue from the burning refinery, coated cars, streets and buildings. This visual evidence brought the war directly to Moscow residents in unprecedented ways. Russian social media filled with videos of Muscovites reacting to the strikes, with some residents describing shaking windows and smoke-darkened skies.

Ukrainian President Volodymyr Zelenskyy framed the attack as retaliation for Russia's earlier strike on a historic Kyiv monastery. "If Ukraine is going to burn, your Moscow will burn too," he stated in a voice message. "It is time to end the aggression, time to end this war."

The refinery damage could significantly affect fuel supplies throughout the Moscow region, though Russia may redirect supplies from other sources. Beyond the immediate practical consequences, the strike's psychological impact proved substantial. For the first time in years of conflict, Moscow's residents directly witnessed the war's consequences, with smoke visible from apartment windows and the air thick with the smell of burning fuel.

Russian officials have not yet formally responded. However, nationalist figures demanded retaliation, with some calling for escalated responses. Historical patterns suggest Moscow will likely answer with renewed waves of missile and drone strikes against Ukrainian cities.