The elements along Israel's borders? I know some are there, exactly who or what are not clear to me.
Don't try to rationalize...ISIS are head chopping mutant scum and the mortal enemy of Western civilization...there is no normalization of ISIS.
Israel has NO business allowing ISIS to set up camp on its door step for ANY reason, and by preventing SAA from going after ISIS in the Golan area Israel becomes complicit.
That's not a good look for any 'civilizad' country and Israel is NO exception.