A young boy who lost his leg in the Yemen war uses a prosthetic limb at a government-run rehabilitation center in Sanaa, Yemen, Saturday, March 5, 2016. Yemen's conflict pits the government, backed by the Saudi-led coalition, against Shiite rebels known as Houthis allied with a former president. Yemen's war has killed at least 6,200 civilians and injured tens of thousands of Yemenis, and 2.4 million people have been displaced, according to U.N. figures. (AP Photo/Hani Mohammed), APTOPIX