1 sinai was not a part of jewish ancestral lands and its settlers were a handful 2 gaza again was not part of the jewish heritage.and the settlers were a few thousand. 3 there are over three hundred thousand living in judea and samaria. further the hills of the region are the heart of our ancient lands. that is the reason why we will not ever leave.thanks for asking.
World Jewish Congress: Nazi train treasures must go to rightful owners (Reuters)
from the article: Israel needs to launch a preemptive diplomatic strike