HEY JOE, LISTEN UP!
NO WHERE IN THE WORLD, DOES YOUR POINT, "RIGHT OF RETURN" HOLD ANY WATER!!! COUNTRIES THAT LOST LAND IN WARS, LOST IT!!! SHOULD WE GIVE CALIFORNIA AND TEXAS BACK TO MEXICO? DUH! JOE, PLEASE USE YOUR BRAIN!
That's pretty much a truism, isn't it? And it explains why wars go on and on over such territories as the losing side tries to change the result. It is good that you don't claim there's any justice in this or that the defeated deserved to lose. That would be too much.
Actually, though, if you think about it, the EU has created a de facto right of return. A Frenchman can live in Germany or in France and the same is true of a German. So such questions as Alsace-Lorraine no longer rankle. The price is that neither France nor Germany has the kind of sovereignty it once did, and it's doubtful this would work right now in the Middle East or our Southwest, or even in Northern Ireland or Eastern Europe at this point, but it does provide hope, if that's what one wants.