Ukraine, the Middle East and now Syria are taking most of the world’s attention, yet Sudan has been ranked as the world's single biggest humanitarian crisis ever. For a second year in a row, Sudan topped a watchlist of global humanitarian crises, according to a report by the International Rescue Committee aid agency. The report says millions of civilians are bearing the brunt of the brutal civil war that erupted between the army and the paramilitary Rapid Support Forces in April 2023. The U.N. says the conflict has driven 11 million people from their homes and unleashed the world's biggest hunger crisis. A conversation with Michelle Gavin, the senior fellow for Africa Policy Studies at the Council on Foreign Relations.