In Our Man in Havana, Graham Greene tells the story of a vacuum cleaner salesman turned British secret agent. His incompetence results in the absurdity of diagrams for cleaner parts being mistaken on high as a blueprint for a Soviet plot, while official money is ploughed into inventing threats to the UK’s own interests.

In The Muslims Are Coming!, a critique of counterterrorism policy by Arun Kundnani, the west’s “domestic war on terror” at times resembles a Greene novel populated by a cast of counterterrorism warriors even unlikelier than a hawker of Hoovers in Havana.

Take, for example, Shahed Hussain, an American petrol pump attendant with a trade in fake drivers’ licences, whom the Federal Bureau of Investigation roped into ensnaring Muslims into terror plots against US targets– planned and financed by the US government itself.