Syria was part of the Arab alliance to wipe Israel off the face of the earth and "push the Jews into the sea", according to their own words. Their attack was imminent, and agian according to the International Law it was Israel's legitimate rtersponse. Israel beat them back and in the process of defeating the enemy captured the Goaln. The Law is ambiguos as to how to adjudicate over the lands captured in such cases. Israel has a strong case over the Golan dues to Syria being the agressor.
Nigeria says troops destroy extremist camp, rescue 178 people (AP)
from the article: UN: Syria rebels detain four peacekeepers in Golan Heights