Yes, yes, yes. None of them are wars in legal sense. Does not matter. The enemy does not care what your law says. They just want to kill you, or push you out of their territory, or conquer yours, or do whatever it is they want to do, using all tools that war puts at their disposal. Repeat, they don't give a flying fuck whether _you_ agree that you are at war. _They_ are.
Vietnam War is a perfect example of my "one-sided" war. Only one side thought itself to be at war (well, American soldiers knew they were at war, but soldiers usually do anyway).
Yes, West should learn (again) to fight people who do not feel bound by the "controls" of war. And yes, we're likely to lose "the West's claims to superiourity". Has not happened yet, the current US administration norwithstanding. It may take a dirty bomb in Manhattan, with dead in tens or hundreds of thousands. When it happens, all that we hear about West's aggression will turn true. Targeting of civilians, chemical weapons, mass torture - you name it. The dark ages will come again.