"But some of Berkshire's wealth comes from PetroChina, whose parent company supplies a large part of the money that underwrites Sudan's military — as well as the janjaweed, according to the United States and the United Nations. The infusion of Berkshire stock places the Gates Foundation in conflict with its own efforts to help victims of the Sudanese civil war. Those victims include refugees of the massacre at Hayffa Ahmed's village." (thanks Laleh)