Qatar was pleased when Egyptian voters elected a Brotherhood government after the Arab Spring. And then the Saudis showered billions in cash upon the military strongman who overthrew the Brotherhood government, Abdul Fattah al-Sisi. (The hands on that glowing orb at the Riyadh convention belonged to Trump, al-Sisi and Saudi King Salman bin Abdulaziz.) Like the Saudis, al-Sisi calls the Brotherhood a “terrorist” organization, though the Brotherhood has historically and officially distanced the organization from terror.
Qatar and Saudi Arabia also compete in Syria. Both are on the side of the rebels, who are overwhelmingly Sunni (while Syrian President Bashar Assad is aligned with Shi’ite Iran), but Qatar favors the Islamic Front, which leaves it vulnerable to the extremist label. Neither side supports ISIS, but ISIS quite likes the Saudis, who have spent billions worldwide promoting a puritanical strain of Islam that the militants are very comfortable with. In fact, after setting up schools, ISIS used Saudi textbooks until they managed to publish their own. In fact, U.S. officials for years have complained that the Saudis, even as they cooperate on the tactical problem of preventing terrorist plots, are one of the main promoters of the intolerance and rigidity that produce Muslim extremism, and terror.