But the Vietminh might never go Communist, and then we could see a Kuomintang China backong the Vietnamese Nationalists against the French.
Could Kuomintang China and India join in an Asian Alliance to peacefully when possible, aiding nationalists when necessary, free the various colonies from the Europeans?
So in Vietnam, China and India could act as negotiators to the French and Vietnamese for a gradual and safe removal of French control, possibly getting Vietnam to agree to pay off the French over the next few decades to leave the country. Then if that doesn't work they supply the Vietnamese weapons and trainers.
They are big enough, they could easily form a true third option in the Cold War.