The wider story is about the stability of South Sudan and of how the country may gotowar with Khartoum before a referendum on full independence in 2011.
But I'm wondering how you explain to the average American who has seen this wargo on for 10 years and is ready for troops to come home -- how do explain it when the people that we're training turn their guns on us, or U.S. officers in a secure Afghan Interior building are shot dead?