After WWII, Poland was given large areas of Eastern Germany. This territory was given because Poland was the victim of German aggression. The native German population was not allowed to stay, but was uprooted by the millions to areas west of the Oder river.

The occupied territories were taken by Israel as war trophies in 1967, after several Arab countries attacked them in a bid to wipe the Jewish state out. IMO, the Jordan and Latani rivers would make a great natural border. The West Bank and Gaza strip could be cleaned out in a matter of a few months. Make it a couple of years if you wish to be humane about it.

The Arabs talk the talk of an "Arab nation" but they don't seem to want to take their Palestinian brothers in.