more from the article:

"Sudan is China's largest overseas oil project. China is Sudan's largest supplier of arms, according to a former Sudan government minister. Chinese-made tanks, fighter planes, bombers, helicopters, machine guns and rocket-propelled grenades have intensified Sudan's two-decade-old north-south civil war. A cease-fire is in effect and a peace agreement is expected to be signed by year-end. But the fighting in Sudan's Darfur region rages on, as government-backed Arab militias push African tribes off their land.

China in October signed a $70 billion oil deal with Iran, and the evolving ties between those two countries could complicate U.S. efforts to isolate Iran diplomatically or pressure it to give up its ambitions for nuclear weapons. China is also pursuing oil in Angola.

In the case of Sudan, Africa's largest country, China is in a lucrative partnership that delivers billions of dollars in investment, oil revenue and weapons -- as well as diplomatic protection -- to a government accused by the United States of genocide in Darfur and cited by human rights groups for systematically massacring civilians and chasing them off ancestral lands to clear oil-producing areas. The country once gave safe haven to Osama bin Laden and is listed by Washington as a state supporter of terrorism. U.S. companies are prohibited from investing there."