As Craig Whitlock of the Washington Post is reporting, after a hasty departure from 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.
While we are arming the enemy, the Iraqi government is supplying cash. As Damian Paletta and Adam Entous report in the Wall Street Journal:
Islamic State militants are skimming tens of millions of dollars a month from salaries paid to Iraqi government employees in occupied areas such as Mosul, and Baghdad continues to send the cash to maintain local support. The group is using the money to fund operations, U.S. officials say, underlining the delicate balancing act U.S. and Iraqi governments face in what they know is a hearts-and-minds campaign against Islamic State ahead of a military operation to retake Mosul, for which U.S. officials are training Iraqi troops.
According to one study, the:
… Islamic State’s practice of seizing a portion of government employee salaries in areas it controls could bring in hundreds of millions of U.S. dollars annually.

