David Sandalow, the U.S. Assistant Secretary of Energy for Policy and International Affairs, has been to China five times in five months.

NEWYORKER: Green Giant

Energy security therefore plays a growing part in China's foreign policy.

ECONOMIST: Energy security

But a Chinese foreign-ministry spokesman said this week that he had not heard of any change in China's policy of helping North Korea cope with its shortages of food and energy.

ECONOMIST: Six-party talks are to resume. Two cheers

And I think it is imperative for American foreign policy looking forward to engage both energy suppliers and rising energy consumers like China in a way that is going to reduce the incentives for these countries to play this game.

NPR: U.S. Foreign Policy and the Axis of Oil

And its members are subject to a host of governments with often contradictory energy policy objectives, including the U.S., Russia, the EU and China.

FORBES: Magazine Article