The Obama administration has reportedly launched a review of military aid and potential weapons sales to allied governments facing a wave of popular revolt. U.S. law prohibits aid to military or security units that engage in human rights abuses. According to the Wall Street Journal, the review could force the cutoff of aid to specific military units that have attacked civilian protesters and even delay multi-billion-dollar arms deals to Gulf states. In October, the White House finalized a $60 billion deal to sell advanced military aircraft to Saudi Arabia, the largest-ever single arms deal in U.S. history. The six Gulf Cooperation Council countries—Saudi Arabia, Bahrain, United Arab Emirates, Oman, Qatar and Kuwait, as well as Jordan—are expected to spend some $70 billion on their militaries this year.