Which action led to the Cuban Missile Crisis?
the testing of ship-to-ship missiles in Cuba by the Soviets
the construction of nuclear missile sites in Cuba
an attack on Cuban naval vessels by U.S. ballistic missiles
the sale of nuclear missile technology to Cuba
the testing of ship-to-ship missiles in Cuba by the Soviets
the construction of nuclear missile sites in Cuba
an attack on Cuban naval vessels by U.S. ballistic missiles
the sale of nuclear missile technology to Cuba