In the video below, Azmi Bishara, an Arab member of the Israeli Knesset speaks openly about the fact that there was never a Palestinian nation/people (Ummah Palestini) only an Arab nation (Ummah Arabi).
During the 2006 war with the Syrian and Iranian backed Hizbollah terrorist group (another proxy group, this one aimed at both Lebanon and Israel), Azmi Bishara provided Hizbullah with information on targets in Israel. He has since fled Israel.