Israel was born and bred in battles forced upon her and the hard-fought-for strategic depth she won can only be partially negotiated away under the most stringent security arrangements and complete cessation of hostilities by both the Palestinians and their militant supporters. As to how much Israel even with her formidable defense capabilities can trust even these security and peace arrangements? She will naturally not be fully convinced and will therefore both retain and build on some of these conquered territories. This is the price of Palestinian aggression, violence, and resistance for the past 62+ years and the Israelis will not be picking up their terror tab.
from the article: With freeze over, West Bank settlements ready to dive into construction