One reasonable way to think about Israel: their moral claim to Tel Aviv is much stronger than our claim to Dallas. And yet, for all the "turtle island" talk, no serious person entertains the idea of rolling back American sovereignty.
None of this legitimizes the ongoing military strategy in Gaza, or, for that matter, the West Bank crisis or the management of the 2-state process, something that the Israeli right has successfully and for decades worked to derail.
I only bring this up because I feel like there's a tendency in message board discussions to center Israel's legitimacy on the Holocaust, as if that's the sum total of what binds Israeli Jewish people to the land. No, it's much more complicated and deep than that.