I won't speak for him. He has said that the situation is intractable, and his relatives there don't want a two-state deal because they fear state-supported terrorism on their border. I can't say that they're wrong, either.

We can argue about what "should have been" all day. But, given the present situation, is there a solution? I don't see one that doesn't involve wiping out one of the populations**. Which is unacceptable. But there you go...

I suppose they could try the "reservation" model, but they sorta already have. And the Palestinians chose their leadership to be Hamas, who wants to annihilate Israel, and with Iranian support, started bombing buses and cafes and anything else they could get at.

**The "Arabs" want to drive Israel into the sea. Israel wants all the land that the Torah says is theirs. There isn't much middle ground that enough of either population is willing to abide.