“If you don’t think Tucker Carlson has more influence on national security policy than many of the guys on the National Security Council, you’re wrong,” Stephen K. Bannon declared Wednesday tonight to a small group of wealthy Manhattan elites in a baronial Fifth Avenue apartment. Thus, at a meeting of the Common Good lecture series in the modern art-festooned living room of New York plutocrat Richard Cohen, the president’s exiled former chief strategist revealed that America’s global interests are being guided by a Fox News host, a favorite of white nationalists, who recently proclaimed on his primetime show that he...