The conflict in Darfur began in 2003 when two non-Arab rebel groups took up arms against the Arab-dominated Sudanese government to protest mistreatment. This led the government to carry out aerial bombings and arm Arab militias called the Janjaweed to attack non-Arab villages. Over 200,000 people have been killed so far and over 1.5 million displaced from their homes as the government and Janjaweed use scorched earth tactics, causing starvation, disease and violence. The UN and US provide most of the humanitarian aid but more action is still needed to address the ongoing crisis.