After WW1 Greece appeared to be 'under threat'from Communism.
Britain was unable to support Greece (as it had done in the past)
In 1947 Greece was under attack from Communist rebels and asked the USA for help.
Truman was concerned about the spread of communism and was determined to take action.
He offered arms, supplies and money to Greece.
Communism in Greece was defeated by 1949 following Civil War.
Truman was determined that the USA would not live in isolation.
The Truman Doctrine aimed to …