Why the NSA Told Henry Kissinger to Drop Dead When He Tried to Cut Intel Links with Britain

LONDON—Henry Kissinger once tried to come between the National Security Agency (NSA) and Britain’s GCHQ, their signals intelligence (SIGINT) brothers from the other side of the pond, and the response from the U.S. intelligence agency was short and swift.“The NSA simply said, ‘Drop dead,’” says the author of a new authorized history of GCHQ, who explains that the two intelligence agencies have a closer relationship with each other than they do with their own governments.The world’s two...