Q, you ARE aware that the State of Israel was created by the UN in territory that had been part of the Ottoman Empire but which they lost after WWI with the breakup of said Empire.
You should also be aware that the Palestinian Arabs were offered citizenship in the new country but listened to the Arab leaders who advised them to flee because they were going to destroy the new country. So they left and have been living in refuge camps ever since.
They are there because the leaders of countries find it politically useful to not encourage or - in some cases - allow them to assimilate.
Another thing you should know is that in 1948, the year Israel was founded, all jews living in Islamic countries in the middle east were expelled from those countries and their property confiscated.
Israel ahs given back most of the land which it held by right of conquest, if you will.
The Arab countries attacked and Israel defended its right to exist. It occupied land that it had taken during those wars of defense. And now it has given most of it back asking only to be left alone.
If they really wanted southern Lebanon, why did they pull out 6 years ago?
A wonderful thing, selective memory.

troll