In Sudan's Darfur province, a reported 450,000 people have been killed in the past four years and two million are now homeless refugees. Last week, saying that "the brutal treatment of innocent civilians in Darfur is unacceptable," President Bush announced a package of sanctions against the Sudanese government, led by President Omar Hassan al-Bashir. Then he pulled back--at the request of the new Secretary General of the United Nations, Ban Ki Moon, who asked for more time for diplomacy. Meantime, Darfur's humanitarian crisis continues. The US has used the term "genocide," but others contend that ignores the root causes of a conflict that goes beyond ethnicity and culture. Are more peacekeepers needed? Is there any real peace to keep? What does climate change have to do with it?