Answer:
Step-by-step explanation:
The Reagan Doctrine.
Many presidents had a policy about how foreign affairs were to be handled. There was the Truman Doctrine, The Nixon Doctrine, The Kennedy Doctrine, The Eisenhower Doctrine. The list is not complete.
The Doctrines listed are usually characterized by being important for some specific point that had to do with foreign affairs. For example, Kennedy was strong on not letting the Soviet Union put missiles on Cuban soil.