Those still scratching their heads over President Trump’s 636-word screed last month on the U.S.-Saudi relationship need not despair. The following quiz should clear up any misconceptions about the country with which we are to remain a “steadfast partner” in the Middle East region. Hint: Some answers may be used more than once. Sec. 1. Islamic Extremism 16 free response questions. Time limit: 10 minutes. In which country were 15 of the 19 Sept. 11 hijackers born, raised, educated and radicalized?   With which country's religious and political establishment do Boko Haram, ISIS, al-Qaeda...