Trump “stood in front of a commemorative wall dedicated to fallen CIA officers and bragged about the size of his inauguration crowd” ©Olivier Douliery/DPA/PA Images

In February, I spent several weeks interviewing spies. Some of them were serving, others were retired, some were British and others American—and they all wanted to talk about Donald Trump. The problem, it seemed to me back then, was that the US’s intelligence and security agencies, and their allies, thought Trump didn’t understand their role, or the significance and delicacy of their product. They were worried, in short, that he might screw it all up.

Trump has done little to alter that view. His post-election turn at CIA head-quarters, when he stood in front of the commemorative wall dedicated to fallen CIA officers and bragged about the size of his inauguration crowd, was greeted with horror by agency staff. Greg Treverton, the Chairman of the US National Intelligence Council told me shortly afterwards that, “There is a very large set of professionals in the intelligence agencies and they’re prepared to do anything for a president that’s legal. And so to set out to offend them, to diss them, that seems to me to be really kind of worse than stupid.”

The clash between the studied, lawyerly upper echelons of the intelligence and security world—which have come to be embodied in the towering, ramrod-straight figure of former FBI Director James Comey—and the fast and loose NYC property developing spiv, was inevitable. Trump has thrown his considerable weight around and come up against something he has almost certainly never experienced in his days spent building absurd, sardanapalian monuments to his own ego: men and women who spend their l…

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