What was worse with Israel than all the other area losses during the World Wars? If anything, I'd say Karelia was worse than Israel.
The main difference to Karelia I can see, is that many refugees from Israel are locked into camps and get their lives destroyed, just in order to keep the question alive.
The point isn't right or wrong; the point is that everyone else with similar experiences left it behind them. Including almost all the Jews that lived in the Muslim world and had to leave -- because of their religion, not because of a civil war.
The main difference to Karelia I can see, is that many refugees from Israel are locked into camps and get their lives destroyed, just in order to keep the question alive.
The point isn't right or wrong; the point is that everyone else with similar experiences left it behind them. Including almost all the Jews that lived in the Muslim world and had to leave -- because of their religion, not because of a civil war.