Ukraine carries out a long-range drone attack on Russia’s largest oil refinery in Omsk, deep in Siberia, according to multiple reports. The strike is described as Ukraine’s longest-range attack since Russia’s invasion began, with sources citing distances of roughly 1,700 miles (about 1,700 km) to 3,000 kilometers for the mission. Reports say the attack causes a fire at the Omsk refinery. Russian authorities characterize it as the longest-range attack of the war, while Ukraine’s military leadership and intelligence sources describe the operation as a first-time strike on Russia’s largest refinery at that location. One outlet cites Ukraine’s Special Operations Forces stating the use of new long-range drones and notes that the strike damages a primary oil-processing unit, described as a critical part of one of Russia’s key fuel facilities. Reuters is referenced by at least one outlet as confirming the attack and the fire. The reports do not provide independent confirmation of the full extent of damage beyond the damaged processing unit and reported fire, but they consistently frame the operation as among the deepest and longest-range Ukrainian drone strikes to date.