Obviously Israel is not now claiming Gaza. It gave it away.
Of course the other side of that coin is that if it was occupied by Israel since 1967 and Israel ended that "occupation" then Gaza should be a sovereign entity today.
But no one considers it such. Why not? Who occupies it now?
I guess the same entity that occupies those portions of the West Bank where Israel no longer exerts authority. The Palestinian Authority clearly has the ability to become a recognized nation if it chooses to join the ranks of civilized nations.
It's not willing at present to do so. Unlike Israel's eastern border, there seems to be no dispute as to Gaza's borders, except by those who believe it should be all Israeli territory.
I think those people are crazy, because if it's Israeli territory, Israel just added a million new arabs as citizens.
So something less than a nation occupies those lands. And it serves a lot of political agendas to keep it that way, although it ensures that unrest will continue indefinitely.
A Fatah/Hamas civil war would probably help immensely, assuming Fatah prevailed. There's no chance for a poltical solution between Israel and the sub-nation that occupies those territories to reach any lasting agreement in the present environment.