NEW : It comes after ExxonMobil signs a contract with Russian company Rosneft , a rival to BP . CNN 's Kendra Petersen and Maxim Tkachenko contributed to this report . BP blasts what it calls Russia 's ` ` illegal '' monopoly in its pipeline . The story is related to a long - running battle over oil exploration in the Russian Arctic .
NEW : It comes after ExxonMobil signs a contract with Russian company Rosneft , a rival to BP . BP blasts what it calls Russia 's ` ` illegal '' monopoly in its pipeline . The story is related to a long - running battle over oil exploration in the Russian Arctic .