RIYADH, SAUDI ARABIA - MAY 21 : (----EDITORIAL USE ONLY MANDATORY CREDIT - "BANDAR ALGALOUD / SAUDI ROYAL COUNCIL / HANDOUT" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) U.S. President Donald Trump (5th L), Deputy Prime Minister of the Sultanate of Oman, Sayyid Fahd bin Mahmoud al Said (4th R), Emir Of Qatar Sheikh Tamim bin Hamad Al Thani (3rd L), King of Bahrain Hamad bin Isa Al Khalifa (5th R), Kuwaiti Emir Sheikh Jaber al-Ahmad al-Sabah (2nd L), King of Saudi Arabia, Salman bin Abdulaziz Al Saud (6th R), Saudi defence minister and Deputy Crown Prince Mohammed bin Salman (R), Secretary general of the Gulf Cooperation Council (GCC), Abdullatif bin Rashid Al Zayani (L), Saudi Arabian Crown Prince Mohammed bin Nayef bin Abdul Aziz Al-Saud (3rd R) pose for a family photo after the U.S. - Gulf Summit at King Abdul Aziz International Conference Center in Riyadh, Saudi Arabia May 21, 2017. (Photo by BANDAR ALGALOUD / SAUDI ROYAL COUNCIL / HANDOUT/Anadolu Agency/Getty Images)