In March 2015, President Barack Obama declared that he had authorized U.S. forces to provide logistical and intelligence support to the Saudis in their military intervention in Yemen, establishing a Joint Planning Cell with Saudi Arabia. U.S. government lawyers have considered whether the United States is legally a co-belligerent in the conflict. Such a finding would oblige the U.S. to investigate allegations of war crimes by the Saudi coalition, and U.S. military personnel could be subject to prosecution.