The Golan is Israeli. From The Golan Is Israeli:
It is almost politically incorrect, practically heresy, to claim today that the Golan is not Syrian in the least nor a deposit or bargaining chip for negotiations. The Golan is a lot more "Israeli" than "Syrian." It has been Israeli for 40 years, double the time it was in Syria's hands. It has been under Israeli sovereignty for 26 years. It has neither a foreign people nor a demographic problem. The Golan has become a part of Israeli life. It is the most frequently visited part of the country, dotted with dozens of Jewish communities, agricultural fields, industrial areas and tourist resorts, nature reserves and wild landscape.
Whoever talks about "returning" the Golan to Syria is being misleading. The Golan was placed under a French mandate in the colonialist agreement that divided the region; Syria won independence only in 1946. In the brief period it was in the Golan - 0.5 percent of its territory - Syria turned the region into a launching pad for its attempt to conquer and decimate Israel. The Syrian army shelled the Israeli communities along the border, attacked the Lake Kinneret fishermen, tried to divert the course of its waters and made life "down below" a Sderot-style hell. The Golan was conquered in a justified defensive war. We paid for it with blood. The Syrians lost it fair and square.
In previous eras as well, the Golan was not considered a part of Syria, and it is replete with findings of Jewish heroism and sovereignty, starting with the reign of Solomon, through the Second Temple period, the heroic battle of the city of Gamla and the Talmudic period. It was no foreign land that we conquered. The results of the Second Lebanon War greatly increased the Syrian appetite and led it to threaten a war against Israel unless the Golan is handed over. This is exactly the time to tell the Israeli story of the Golan Heights.