AP Photo

On Oct. 26-27, 1962, human civilization came close to being destroyed. Schoolchildren were ordered into shelters; supermarket shelves were emptied of soup cans and bottled water. It was the most perilous moment of the Cuban missile crisis, and of the cold war. But the danger of Armageddon did not begin, as legend has it, when the United States learned that Soviet missiles had reached Cuba’s shores earlier that month.