HE remembers the women sunbathing naked on the deck of a passing yacht. He remembers, too, the lurking menace of a Russian intelligence-gathering trawler, watching from afar as one of the most audacious American coups of the cold war unfolded on the ocean floor, 16,500ft beneath the Pacific surface. David Sharp recalls every detail of the 1974 mission known as Project Azorian, one of the most ambitious, expensive and politically volatile clandestine operations launched by the CIA. As one of the CIA’s agents in charge of recovering a sunken Soviet submarine and its cargo of nuclear-tipped missiles, Sharp spent 63...