“The Padishah Emperor turned against House Atreides because the Duke’s Warmasters Gurney Halleck and Duncan Idaho had trained a fighting force—a small fighting force—to within a hair as good as the Sardaukar. Some of them were even better. And the Duke was in a position to enlarge his force, to make it every bit as strong as the Emperor’s.”
The only explanation of the Emperor's seemingly baffling betrayal of House Atreides.
