Ukraine Launches Largest Drone Strike on Russia in Over a Year Killing Four People

The drone strike directly damaged Russian oil infrastructure (refinery and pumping stations), potentially reducing Russian refining capacity and crude oil pumping. This creates supply disruption risk for Russian oil products and crude exports, affecting global oil markets. The channel is supply_shortage (temporary disruption) and logistics (pipeline/refinery damage). Impact is region-specific (Russia) but with global oil price implications. Winners: alternative crude suppliers (OPEC+, US shale). Losers: Russian oil producers and refiners. Commercial mechanism: reduced Russian oil output and export capacity, margin squeeze for Russian refiners, potential price spike for crude and refined products.