WASHINGTON, DC - MAY 13:  Deputy Crown Prince Mohammed bin Salman of Saudi Arabia (L) and Saudi Minister of Foreign Affairs Adel Al-Jubeir arrive at the White House May 13, 2015 in Washington, DC. The princes are scheduled to meet with U.S. President Barack Obama and Vice President Joe Biden as part of this week's meetings with delegations from the Gulf Cooperation Council.  (Photo by Chip Somodevilla/Getty Images)