Since the 1980s, the conflict ravaging Sudan has generated the world's largest internally displaced population. An estimated four million people have fled their homes to escape fighting between government troops, the Sudan People's Liberation Movement/Army (SPLM/A) and several smaller militia groups. While peace talks between the two main warring parties have progressed since they started in July 2002, one of the worst crises in Africa has been unfolding in Darfur, western Sudan.