Date doesn't matter. Possesion is 90% of the law.
They are illegal.
He who has the gold (or in this case, land) makes the laws.
Jerusalem must be shared.
Says who? I'm sorry but that is a Jewish city. And even when Barak tried to give up half of it, Arafat declined. So TOO BAD. The Palestines want nothing less than ALL Jerusalem.
The PLA must insist that the Arab League recognize Israel by doing so themselves in word and in deed.
Now you are just asking for miracles.
1. Clear the Settlements
2. Share Jerusalem
3. 1 & 2 are not options; they are a package.