What Ho Chi Minh was alluding to is that he realized the war would be a war of attrition. They could not defeat the US in a full scale war, so they needed to use guerilla tactics and draw it out. That was how they defeated France before that.
South Viet Nam was never a sovereign country and was never meant to be one either, I can reference many sources on this topic, if you like. The US did not acoomplish any of its goals in Viet Nam.