For many years people in the United States argued that the outcome of the Vietnam conflict would have critical implications for the future of freedom everywhere. The familiar argument ran: If the Communists were victorious, Western security would be weakened; but if the Communists were defeated in Vietnam, we would have met "The Third Challenge," "Wars of Liberation," and convinced the enemy that he could not succeed in world conquest by proxy.
Grassey, Thomas B.
"Some Perspectives on Revolution,"
Naval War College Review: Vol. 30
, Article 3.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol30/iss1/3