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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), King of Saudi Arabia, Salman bin Abdulaziz Al Saud (5th R), The Crown Prince of Abu Dhabi General Sheikh Mohammed Bin Zayed Al Nahyan (3rd L), King of Bahrain Hamad bin Isa Al Khalifa (4th R), Kuwaiti Emir Sheikh Jaber al-Ahmad al-Sabah (4th L), Emir Of Qatar Sheikh Tamim bin Hamad Al Thani (2nd R) and Deputy Prime Minister of the Sultanate of Oman, Sayyid Fahd bin Mahmoud al Said (3rd R) are seen during 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)

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), King of Saudi Arabia, Salman bin Abdulaziz  Al Saud (5th R), The Crown Prince of Abu Dhabi General Sheikh Mohammed Bin Zayed Al Nahyan (3rd L), King of Bahrain Hamad bin Isa Al Khalifa (4th R), Kuwaiti Emir Sheikh Jaber al-Ahmad al-Sabah (4th L), Emir Of Qatar Sheikh Tamim bin Hamad Al Thani (2nd R) and Deputy Prime Minister of the Sultanate of Oman, Sayyid Fahd bin Mahmoud al Said (3rd R) are seen during 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)