The Cuban Missile Crisis had a lot of different effects. Let us look at some of the more important of them.
First, in an immediate sense, the crisis led to some adjustments in who had what missiles where. Of course, the Soviet Union removed its missiles from Cuba. However, though this was not known at the time, the US removed its nuclear missiles from Turkey.
Second, the crisis made Cuba more secure. That is because the US pledged not to invade the island.
Third, the crisis led to the creation of a “hotline” between the US and the Soviet Union. The point of this was to ensure that the two countries’ leaders would be able to speak directly to one another in the event of serious tensions. This would hopefully help to reduce the possibility of nuclear war breaking out accidentally.
Fourth, the crisis hurt Nikita Khrushchev to some degree. It called into question his wisdom since it had been his decision to put the missiles in Cuba. This helped lead to his ouster from power two years later.
Finally, the crisis helped to make John F. Kennedy’s legend. He came out of the crisis looking like a great leader. This helped create the image of him that many people have today.