What President Kennedy showed during this crisis was to show that his National Security Council was on top of the situation from the beginning. And the question which was a huge question, was what to do about it to prevent missiles from being launched at the United States. President Kennedy, obviously did not want to go to war with another superpower and risk destroying the world in the process. Which might have happened had the United States gone to war with the Soviet Union. Trying to invade the Communist Republic of Cuba with Russian ships in the area was not going to happen without some war. Which meant that the Kennedy Administration, was going to need a negotiated settlement with Russia.
Russia, was literally able to stick their own nuclear weapons on the island of Cuba. Just ninety miles from Miami, Florida. With enough power to eliminate the East Coast of the United States. So President Kennedy and his National Security Council knew they had to get those weapons out of Cuba. They also knew that going to war with a country the size and that was as powerful militarily as the Soviet Union, probably wasn’t an option at all. So they were going to have to work this out diplomatically. To get the weapons out of Cuba, America was going to have to give Russia something they wanted as well.
What prevented World War III during the Cuba Missile Crisis was Russia agreeing to pull their weapons out of Cuba. In return for America pulling their weapons out of Turkey. America, didn’t pass new economic sanctions on Russia hoping that Russia would eventually take the weapons out of Cuba. As well as hoping they would never use them, or give them to Cuba. And America didn’t go to war with Russia and try to settle it that way. Both countries had something that the other wanted and wanted something that the other had. And both were smart and sane enough to settle the crisis diplomatically.