Israel has occupied the Palestinian territories and the Golan Heights since the Six-Day War of 1967.
So judging by previous behavior it's probably fair to suggest a good while. They've not just invaded and occupied they have actively colonized and undertaken systematic ethnic cleansing.
And as posted up thread:
Benjamin Netanyahu has declared that the annexed Golan Heights “belongs to Israel for eternity.”
So if you think Israel is really just setting up a temporary buffer zone it's likely @Auvergne63 really is the tooth fairy.