The nature of the new world system was not so different from the old. It was for the moment more stable, but a reasonable forecast would be that Africa in particular had a century of border wars ahead of it.
Daniel Patrick MoynihanThe Soviet Union came apart along ethnic lines. The most important factor in this breakup was the disinclination of Slavic Ukraine to continue under a regime dominated by Slavic Russia. Yugoslavia came apart also, beginning with a brutal clash between Serbia and Croatia, here again 'nations' with only the smallest differences in genealogy; with, indeed, practically a common language. Ethnic conflict does not require great differences; small will do.
Daniel Patrick Moynihan