ONGC to buy extra 11% stake in Russia's Vankorneft 
State-run Oil and Natural Gas Corporation (ONGC) has signed an agreement with Russia’s national oil company Rosneft to acquire an additional 11% stake in latter's unit JSC Vankorneft. The purchase would reportedly cost around $924 million. With this, ONGC Videsh Vankorneft will hold a 26% stake in Vankorneft, including a 15% stake it had acquired in March.