The entire Golan is part of Israel. This is a historical fact. The modern nation of Syria is an invention of Colonialist powers. This invention is now falling apart because it's not a real nation. It's an artificial nation like Lebanon, Jordan, Iraq and "Palestine". These nations and many like it were invented by the Imperialist to serve the Imperialist. Israel is within it's rights to liberate the lands stolen from it and this includes the Northern part of the Golan.
Guatemala judge orders detention of president in corruption scandal (Reuters)
from the article: Israel fires retaliatory missile into Syria, wounding two soldiers