Why was the U.S. not be successful in South Vietnam?
Wars (battles) are dictated by terrain. Korea was a peninsula and was easily isolated, as the US Navy controlled the seas. Communist North Korea could only re-supply from it’s northern borders. Vietnam was NOT a peninsula, and could re-supply their war effort for as long as they wanted to. The only way to defeat them would have been to widen the war and involve other countries, in order to stop their flow of men and material into South Vietnam. The US did NOT want to make a bigger war. So we ended it, by leaving.
