By Gordon Corera  8 February 2016

 

A secret visit to Bletchley Park 75 years ago gave birth to an alliance between two British and US intelligence agencies which continues today.

 

It was late on 8 February 1941 when four Americans arrived at Bletchley Park. Black-out curtains made the mansion appear even darker. The journey of the four - known as the Sinkov mission after their leader Abraham Sinkov - had been stormy, dangerous and utterly secret.

 

Their arrival marked the opening courtship of what would become the longest standing - and occasionally controversial - intelligence alliance in history.

 

                        http://ichef-1.bbci.co.uk/news/624/cpsprodpb/A641/production/_88116524_ops-room.jpg

                                             The recreated WW2 operations room at the Bletchley Park mansion

 

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