Thqe borders between Syria, and Israel intially were just an accident of the colonial powers, England and France, when they were dividing up the Ottoman Empire. From '48-'67 when Syria was in possesion of the Golan, they used it as a base to attack Israel, over and over again. Since thats the obvious reason that Syria wants it, Israel, for that same obvious reason, can never give it back.
Germany sends suspected ISIS recruiter back to Spain (AP)
from the article: Facebook finally allows Golan residents to live in Israel