A just war is a type of war that comes as a last resort after exhausting all the available peaceful options to solve an issue. In the case of this war, it is important to note that the Vietnam War was not called for thus making it unjustified because there was no benefit that the US was going to get from the war. The reason why is speculate the war as being unjustified is because, North Vietnam had tried spreading the concept of communism in to the southern part of Vietnam. In this trial, the French got themselves involved by helping the southerners to resist the concept of communism that was being imparted to them by the northerners. As a result, the French could not play its part by