Israeli collaborators

Was it Abu Nidal who once observed that Fatah is a collection of collaborators and traitors with a few patriots spread in between? I thought so because I saw a fanatic right-winger (who heads the Foundation for the Defense of Democracies, Fascism and Revisionist Zionism) on TV and he was yelling about the plight of Fatah collaborators in Gaza. He kept saying: they are beating them and mistreating them. He was foaming at the mouth and toes.