Secretary of State under Truman, he negotiated the treaty that led to the formation of NATO in 1949
[DOC] [TLE] North Atlantic Treaty Organization (NATO) | Britannica.com [PAR] NATO military alliance established by the North Atlantic Treaty (also called the ... 
and eastern Europe, and by 1948 communists under Moscow's sponsorship had 
... U.S. Secretary of State Dean Acheson signs the North Atlantic Treaty on April 4
, ... Countries, and Norway and in April 1949 resulted in the North Atlantic Treaty.