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WASHINGTON, DC - JUNE 17: Deputy Crown Prince and Minister of Defense Mohammed bin Salman of Saudi Arabia (C) is escorted by U.S. Deputy Chief of Protocol Mark Walsh (R) as they walk into in the White House on June 17, 2016 in Washington, DC. The deputy crown prince will meet privately with U.S. President Barack Obama to discuss issues "including de-escalating regional conflicts, our campaign against ISIL, Saudi Arabia's National Transformation Program, and efforts to further progress on the objectives agreed to at the U.S.-GCC Summit in April," according to the White House. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - JUNE 17:  Deputy Crown Prince and Minister of Defense Mohammed bin Salman of Saudi Arabia (C) is escorted by U.S. Deputy Chief of Protocol Mark Walsh (R) as they walk into in the White House on June 17, 2016 in Washington, DC. The deputy crown prince will meet privately with U.S. President Barack Obama to discuss issues "including de-escalating regional conflicts, our campaign against ISIL, Saudi Arabia's National Transformation Program, and efforts to further progress on the objectives agreed to at the U.S.-GCC Summit in April," according to the White House.  (Photo by Chip Somodevilla/Getty Images)