Israel just needs to declair that they will pay, for however long they want to stay, a payment for the lands they occupy and call it a lease. This only goes for the settlements and the Golan but if you want to include Israel proper you can. But after years of wars Israel has a right to "unilateral leasing agreements." It's a fun idea, anyway. Think about it.
Austrian chancellor: Austria and Germany will allow migrants entry (Reuters)
from the article: No one to give them back to