Photo gallery: President Obama in Saudi Arabia

President Barack Obama meets with Saudi Arabia’s King Salman at Erga Palace in Riyadh, Saudi Arabia, Wednesday, April 20, 2016.

President Barack Obama is greeted as he arrives on Air Force One at King Khalid International Airport in Riyadh, Saudi Arabia, Wednesday, April 20, 2016.

President Barack Obama and Saudi Arabia’s King Salman walk to President Obama’s motorcade after meeting at Erga Palace in Riyadh, Saudi Arabia, Wednesday, April 20, 2016.

President Barack Obama and Saudi Arabia’s King Salman walk together to a meeting at Erga Palace in Riyadh, Saudi Arabia, Wednesday, April 20, 2016. The President begins a six day trip to strategize with his counterparts in Saudi Arabia, England and Germany on a broad range of issues with efforts to rein in the Islamic State group being the common denominator in all three stops. (AP Photo/Carolyn Kaster)  (Carolyn Kaster / AP)

President Barack Obama and Saudi Arabia’s King Salman meet at Erga Palace in Riyadh, Saudi Arabia, Wednesday, April 20, 2016. The President begins a six day trip to strategize with his counterparts in Saudi Arabia, England and Germany on a broad range of issues with efforts to rein in the Islamic State group being the common denominator in all three stops. (AP Photo/Carolyn Kaster)  (Carolyn Kaster / AP)

President Barack Obama is greeted by Ambassador Joseph W. Westphal, U.S. Ambassador to the Kingdom of Saudi Arabia as he arrives on Air Force One at King Khalid International Airport in Riyadh, Saudi Arabia, Wednesday, April 20, 2016. The president begins a six day trip to strategize with his counterparts in Saudi Arabia, England and Germany on a broad range of issues with efforts to rein in the Islamic State group being the common denominator in all three stops. Also greeting the President Obama are Linda Westphal, Prince Faisal bin Bandar bin Abdulaziz Al-Saud, Governor of Riyadh, Engineer Ibrahim Al-Sultan, Mayor of Riyadh Region, Fahad Al-Saheel, Royal Protocol - Airports In-charg. (AP Photo/Carolyn Kaster)  (Carolyn Kaster / AP)

President Barack Obama is escorted to Marine One as he arrives at King Khalid International Airport in Riyadh, Saudi Arabia, Wednesday, April 20, 2016.