Borderlands Syndrome is the rabid nationalism of non-native sons:
One unifying biographical factor in the lives of Napoleon, Stalin and Hitler is what some historians have termed “borderland syndrome” — they were born and raised on the outer fringes of the nation they ultimately ruled. France’s Napoleon was Italian, Russia’s Stalin was Georgian, and Germany’s Hitler was Austrian. Yet something about their childhood experiences living on the borders of greater empires, and becoming non-native sons of these greater empires, turned them into driven men. And ultimately, each was taken by a fanatical and irrational patriotism which drove them to conquer and dominate other nations and peoples.
Other examples include Alexander the Great, Theodor Herzl, and Sun Yat Sen.