1. Within two days of the latest Cuban threat, President Kennedy formed a special advisory group (Executive Committee of the National Security Council or ExComm) to weigh up various options
2. After talks with ExComm, Kennedy was faced with a range of options to deal with the Soviet threat in Cuba
3. Ignore the missiles: The Soviets would see this as weakness on Kennedy's part, and they would likely take advantage of it
4. Get the United Nations involved: The USSR would block any UN action so this would be of little value
5. Call on the USSR to remove the missiles: He could do this by explaining the damage their presence was doing to Soviet-American relations
6. Blockade Cuba and not allow any more Soviet ships to enter Cuba: This would still leave missiles on Cuba but the negotiations would continue in the background while publicly Kennedy would be seen to be doing something specific. This risked military confrontation
7. Invade with soldiers or launch air attacks: An unprovoked attack, involving air strikes probably followed by an invasion, would be hard to justify. This would probably lead to Soviet retaliation