Since the start of the Syrian Civil War, Israel has tried to maintain a neutral policy – Israel’s engagement with Hezbollah and Iran gets a lot more coverage than its engagement with Sunni Islamist groups like Al Qaeda’s Nusra Front.
But Israel has been involved in skirmishes with jihadist rebels. In 2014, Israel laid cover fire in the form of an artillery barrage against Islamist rebels who had pinned down a number of Irish UN peacekeepers in the combat zone. Israeli artillery covered the Irish troops’ escape to the Israeli side of the border.
There have been hints of Israeli links to Syrian rebel groups, likely for the sake of limiting or eliminating Hezbollah’s presence along the Israeli border.