Who spoke about the domino theory, warning that if Vietnam fell to communism, the rest of Southeast Asia would also fall to communism? Harry S. Truman Dwight D. Eisenhower Franklin D. Roosevelt Woodrow Wilson
President D. Eisenhower was the one that spoke about the domino theory, warning that if Vietnam fell to communism, the rest of the Southeast Asia would also fall to communism. Hope This Helps :)