The Fourth Protocol is a 1987 British Cold War spy film featuring Michael Caine and Pierce Brosnan, based on the novel The Fourth Protocol by Frederick Forsyth.
MI5 officer John Preston Michael Caine breaks into the residence of British government official George Berenson Anton Rodgers on New Years Eve and finds a number of top secret NATO files that should not have been there. He reports his findings to highranking British Secret Service official Sir Nigel Irvine Ian Richardson, who deals with the leak. Prestons unauthorised method of retrieving the documents embarrasses the actingDirector of MI5, Brian HarcourtSmith Julian Glover, and as punishment for his insubordination, Preston is relegated to lowly Airports and Ports.KGB officer Major Valeri Petrofsky Pierce Brosnan is sent on a mission to the United Kingdom by General Govershin Alan North, the head of the KGB. Govershins subordinate, Borisov Ned Beatty, complains to his old friend General Karpov Ray McAnally, about his espionage department being stripped of resources and personnel, particularly his star officer Petrofsky. A surprised Karpov quietly investigates and learns about Petrofskys unsanctioned mission to violate the Fourth Protocol by assembling and detonating an atomic device so that it will appear to be a nuclear accident at a nearby military base. It is intended to strain BritishUS relations and strengthen the antinuclear movement in advance of an election in favour of the Soviet Union. ........
Source: Wikipedia