Of Our Own Device by M.K. South

1985, the Year of the Spy. The CIA and the KGB clash in the last showdown as the Soviet bloc enters its final years. Deception is the name of the game, and it engulfs Jack Smith, a rookie CIA case officer posted at the American Embassy in Moscow—secrets to keep, secrets to find, and one to give away. When he meets Eton Volkonsky, a talented nuclear physics student, Jack is instructed to develop the Russian as a future agent. As their friendship deepens, Jack is torn between his suspicions that Eton is with the KGB and his attraction to the man. Will their relationship survive the test of time, history and pitfalls of their own device?