As Mr. Trump surely knows, the new Saudi cover story is contradicted not just by evidence collected by Turkish authorities and by journalists but also by the reporting of the U.S. intelligence community. All point to Mohammed bin Salman as the instigator of a premeditated, cold-blooded and brutal murder, followed by the dismemberment of Mr. Khashoggi’s body. As The Post’s Shane Harris reported, CIA officials have listened to an audio recording in the possession of Turkish officials they say backs up their account that Mr. Khashoggi was murdered minutes after entering the consulate by a team of 15 men. The Post has identified five of those men as probable members of the crown prince’s personal security detail.