American military officials admitted to members of Congress that they have lost track of millions in small arms, ammunition, night vision goggles, patrol boats, vehicles and other supplies donated by the US to the Yemeni government.
The US has supplied more than $500 million in military aid to Yemen since 2007 through programs managed by the Defense Department and State Department. But in January, the Yemeni government was toppled by Shiite Houthi rebels, backed by Iran and critical of US drones strikes in the country, who also took over government military bases in the north.
Since then, the Defense Department has lost its ability to monitor the whereabouts of weaponry and equipment. The situation has only grown worse since the US closed its embassy in Sanaa, the capital, in February and withdrew military advisers.