(1960) Confrontation between the U.S. and the Soviet Union.
On May 1, 1960, the Soviet Union shot down a U.S. U-2 reconnaissance plane and called the flight an "aggressive act." The U.S. denied Soviet claims that the pilot, F. Gary Powers, had stated that his mission was to collect Soviet intelligence data. Nikita Khrushchev declared that the Soviet Union would not take part in a scheduled summit conference with the U.S., Britain, and France unless the U.S. immediately stopped flights over Soviet territory, apologized, and punished those responsible. Pres. Dwight D. Eisenhower agreed only to the first stipulation, and the conference was adjourned. Powers was tried in the Soviet Union and sentenced to 10 years in prison; in 1962 he was exchanged for the Soviet spy Rudolf Abel.