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US President Barack Obama (L) speaks with King Salman bin Abdulaziz al-Saud of Saudi Arabia at Erga Palace in Riyadh, on April 20, 2016. Obama arrived in Saudi Arabia for a two-day visit hoping to ease tensions with Riyadh and intensify the fight against jihadists. / AFP / Jim Watson (Photo credit should read JIM WATSON/AFP/Getty Images)

US President Barack Obama (L) speaks with King Salman bin Abdulaziz al-Saud of Saudi Arabia at Erga Palace in Riyadh, on April 20, 2016.
Obama arrived in Saudi Arabia for a two-day visit hoping to ease tensions with Riyadh and intensify the fight against jihadists. / AFP / Jim Watson        (Photo credit should read JIM WATSON/AFP/Getty Images)