Does Israel have a right to exist? The Arabs don't think so. A couple of things you should remember:
Israel is about the size of New Jersey. Compare that with the size of the Arab world. That same Arab world, as you would know if you weren't a sniveling peacenik, has refused to take the first so-called "Palestinian" refugee in since 1948.
Finally, you realize, don't you, that there's no such thing as an ethnic "Palestinian." If I'm wrong, explain to me the difference between a Jordanian and a so-called "Palestinian."
Excellent point. What I've heard, and please correct me, if it's wrong, is that Arabs only started using the moniker "Palestinian" to describe themselves, after the Six Day War.