A handout picture provided by the Saudi Royal Palace on June 17, 2016 shows deputy crown prince and Minister of Defence, Prince Mohammed bin Salman (C-L) meeting with US President Barack Obama in Washington. / AFP PHOTO / Saudi Royal Palac AND AFP PHOTO / BANDAR ALGALOUD / === RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / HO / SAUDI ROYAL PALACE" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS ===BANDAR ALGALOUD/AFP/Getty Images