" Azerbaijan’s output has tripled since the breakup of the Soviet Union and is now around 800,000 barrels per day. But the real oil powerhouse is Kazakhstan, whose output has grown from 570,000 barrels per day to 2 million. Those countries together are now producing more oil than the combined Norwegian and British output from the North Sea. "

― Daniel Yergin , The New Map: Energy, Climate, and the Clash of Nations