It led to a MAJOR military blockade around the island, and the U.S. Government ordered all Russian nukes to be pulled out of Cuba or there the Americans will intervene militarily. It is also worth noting that the President ordered an invasion force to form to give the bluff that we were going to invade if they didn't pull off. The Navy was also prepared to shoot and destroy any Cuban and Russian ships or military vessels that did not cooperate with our demands.