TNK-BP is an independent oil producer and Russia's third-largest oil company after state-run Rosneft and independent LUKoil. It is also a significant source of profits for BP. With assets primarily in Russia and Ukraine, the firm produces 1.69 million barrels per day of oil, accounting for roughly a quarter of BP's total global oil output. The firm has faced several problems in Russia. Over the past decade, TNK-BP has been at the center of a turf war between Russian state-owned energy firms Rosneft and Gazprom, both of which want to break up the firm and divide it in a manner similar to defunct Russian oil giant Yukos. TNK-BP also served as leverage in struggles between the Kremlin and London during a string of recent scandals, including the "Spy Rock" incident .