What was the purpose of the Eisenhower Doctrine?

The purpose of the Eisenhower Doctrine was to aid any Middle Eastern nation requesting assistance against armed aggression from any country controlled by international communism

President Dwight D. Eisenhower announced the Eisenhower Doctrine in January 1957, and Congress approved it in March of the same year. Under the Eisenhower Doctrine, a country could request American economic assistance and/or aid from U. S. military forces if it was being threatened by armed aggression from another state.