More than half the people in Sudan are suffering from severe hunger, with hundreds dying from starvation and hunger-related diseases each day. However, life-saving international aid is unable to reach millions of people who desperately need it due to restrictions imposed by the Sudanese army and other warring parties. The United Nations relief agencies, the main providers of aid, won't dispense aid in places without the approval of Sudan's government, which is recognized as sovereign by the UN. The situation in Sudan highlights the challenges faced by the global famine-fighting system, which relies on the cooperation of governments in famine-stricken countries.