When Lockheed U-2 spy plane flights over the island revealed that Soviet missile launchers were being installed , U.S. President John F. Kennedy instituted a naval blockade and publicly confronted the Soviet Union .
This was obviously disquieting to the United States , given Cuba 's proximity .
When Lockheed U-2 spy plane flights over the island revealed that Soviet missile launchers were being installed , United States President John F. Kennedy instituted a naval blockade and publicly confronted the Soviet Union .
This was obviously disquieting to the United States , given Cuba 's proximity .