Feb. 15, 2026

The Man Who Remembered Everything

John Graham, Canada’s Quiet Spy in Castro’s Cuba

The story of John Graham, a Canadian diplomat in 1960s Cuba who became an unlikely spy during the aftermath of the Cuban Missile Crisis. Because the United States had no embassy or formal presence in Cuba after the revolution, President John F. Kennedy quietly asked Canadian Prime Minister Lester B. Pearson for help. Pearson turned to Graham, a reserved career diplomat rather than a James Bond‑style operative, and tasked him with confirming whether the Soviets were actually removing their nuclear weapons from the island.


Graham declined CIA spy gadgets, including a covert camera, because being caught with obvious espionage equipment would have been too dangerous. Instead, he relied entirely on his remarkable memory, driving around Cuba in check shirts and khakis, observing troop movements, equipment, missile silhouettes, and radar installations from the outside, then returning to the Canadian embassy each day to reconstruct everything from memory, down to distances, serial numbers, and layouts.


His detailed reports, cross‑checked with imperfect high‑altitude spy photography, helped reassure Washington that the Soviets were indeed complying, contributing quietly but significantly to the de‑escalation of the crisis. For this work, Graham received no parade or public recognition, simply continuing his career as a successful Canadian diplomat.


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