US make war with Vietnam in the past because of conflict between 2 systems: capitalism vs communism. That war was not just Vietnam vs US but (Vietnam + USSR + China + Cuba) vs (US and allies) and unlucky for us, battlefield is Vietnam land.
China is different totally. China has wanted to rob Vietnamese land from thousands of years up to now. More than that, Chinese want to erase Vietnamese culture. That is the big, very big problem. With such huge problem China was, is and will be an inherited enemy of Vietnamese, forever.
sorry jokers, if china want to rob you would have done it in vietnam war. Why need to help you for that war, look at you Viet make me laugh when you said that USA is a saint. Yup a Saint that take 3-5 millions of your viet nation human. Yup USA is a Saint that 100 million people dead under the name of Democratics.