As an aside, whipping up group feels aka oxytocin (better = just us / technical exceptionalism, or poor-us / morale exceptionalism /exclusionism) leads to the inevitable testosterone and often aggressive counterdrive reaction (in the same individual body, or group).
Good for morale, good for survival.
Thus, however, we know the chemical psychoactive basis of eg. current Chinese expansionary aggression. The current leaders 'thought books / lifebio/ are oxytocin thick. And required reading for all party members.
There is an insurmountable hole in that approach, however. Thus it is fair and true in fact to say, the outcome of any future group conflict therewith was decided more than 1000 years ago. Such is life.
