The civil war in Sudan, which broke out two years ago, has been described by aid agencies as the "worst humanitarian crisis in the world." Today, at a conference in London, delegations from European countries, the African Union, the United Arab Emirates and Egypt pledged to increased aid to Sudan, as well as try to find a pathway to peace.

(Photo: A woman sits by the roadside after paramilitary Rapid Support Forces attacks on the Zamzam and Abu Shouk refugee camps, near the city of El-Fasher in Darfur. Credit: BBC)