U.S. firearms supplied to the Interior Ministry in Yemen, which has received $500 million in aid from the United States since 2007 under an array of Defense Department and State Department programs. (Government Accountability Office)

Washington Post: Pentagon loses track of $500 million in weapons, equipment given to Yemen

The Pentagon is unable to account for more than $500 million in U.S. military aid given to Yemen, amid fears that the weaponry, aircraft and equipment is at risk of being seized by Iranian-backed rebels or al-Qaeda, according to U.S. officials.

 With Yemen in turmoil and its government splintering, the Defense Department has lost its ability to monitor the whereabouts of small arms, ammunition, night-vision goggles, patrol boats, vehicles and other supplies donated by the United States. The situation has grown worse since the United States closed its embassy in Sanaa, the capital, last month and withdrew many of its military advisers.

Update #1: U.S. Weapons Worth $500 Million Vanish in Yemen -- Fiscal Times
Update #2: Pentagon loses track of $500 million in military aid to Yemen, officials say -- FOX News

WNU Editor: I guess it is safe to assume that the extremists in Yemen now have the weapons that they need to continue their war within Yemen .... and maybe abroad.