In order to prevent the propagation of Communism worldwide, especially due The U.R.S.S. was on top of that and was the main rival in the Cold War also supporting the Communist side of Vietnam; The United States of America employed several strategies such as education, training and military support to South Vietnam, and off course <em>"The Containment Policy"</em> aka <em>"Cold War foreign policy",</em> which helped economically to <em>Western Europe Countries</em> and pressure them diplomatically in order to have them as allies against The U.R.S.S.
The foreign policy issue that was a motivation for American intervention in Vietnam was the idea of "containment" which sought to contain communist expansion where it was, as opposed to attempting to eradicate it at the source.
The Atlantic charter was an policy statement planned by UK and US leaders, which detailed the post-war goals for the Allies, however it was later agreed to by all of the WWII Allies.
