[shaurz]

Many of these problems you mention are due to empires past imposing borders that don't correspond to natural nations. Most of Europe's borders are pretty natural equilibriums settled after centuries of wars. They are not perfect though so we are now seeing secessionist movements across the continent. Demographic changes and migrations flows threaten to upset these equilibriums. Africa and Middle East have different problems since their borders are more artificial and imposed from the outside. Most of these regions of the world can barely hold together a cohesive government without outside help.