The larger ideological struggle among the superpowers was a much more relevant reason for why Vietnam was a war zone during the late 1960’s up through the mid 1970’s.
In fighting the Vietnam War, the US pursued a strategy of attrition to promote their reputation of relentless support for the sake of democracy.
Lawrence remarked that "the Joint Chiefs pursued a strategy of attrition" in fighting the Vietnam war (Lawrence, 102).
Johnson persisted in fighting a war of attrition mainly due to strong international political pressure to support democracy and eliminate communism.
In his book titled “The Vietnam War: A Concise International History,” Mark Lawrence proposed that the broader international context of the cold war along with the openness to influence of Vietnam allowed the war to take place in the first place.