Bannon had principles – mad ones, perhaps – but a thought-through worldview. I’m not convinced anybody else in the White House does. Bannon reportedly kept a list to remind the President of his campaign pledges on immigration, Obamacare and battling the global elites. His departure now raises the question: what’s happened to Trumpism? Is Trump now at war with Trumpism? And if Trump doesn’t have the movement that put him in power, what does he have?