<P> The Truman Doctrine was an American foreign policy whose stated purpose was to counter Soviet geopolitical expansion during the Cold War . It was first announced to Congress by President Harry S. Truman on March 12 , 1947 , and further developed on July 12 , 1948 , when he pledged to contain threats to Greece and Turkey . Direct American military force was usually not involved , but Congress appropriated financial aid to support the economies and militaries of Greece and Turkey . More generally , the Truman Doctrine implied American support for other nations allegedly threatened by Soviet communism . The Truman Doctrine became the foundation of American foreign policy , and led , in 1949 , to the formation of NATO , a military alliance that is still in effect . Historians often use Truman 's speech to date the start of the Cold War . </P>
<P> The Truman Doctrine was an American foreign policy whose stated purpose was to counter Soviet geopolitical expansion during the Cold War . It was first announced to Congress by President Harry S. Truman on March 12 , 1947 , and further developed on July 12 , 1948 , when he pledged to contain threats to Greece and Turkey . Direct American military force was usually not involved , but Congress appropriated financial aid to support the economies and militaries of Greece and Turkey . More generally , the Truman Doctrine implied American support for other nations allegedly threatened by Soviet communism . The Truman Doctrine became the foundation of American foreign policy , and led , in 1949 , to the formation of NATO , a military alliance that is still in effect . Historians often use Truman 's speech to date the start of the Cold War . </P>
what is the historical significance of the truman doctrine
what is the historical significance of the truman doctrine
became the foundation of American foreign policy led , in 1949 , to the formation of NATO
became the foundation of American foreign policy led , in 1949 , to the formation of NATO