That is what keeps the wolves at bay.

How will Assad and mullahs explain that to their minions. Years of raving against Israel and now doing nothing. Assad does not have the man power any more to suppress disent. Shia militias killing sunnis who protest Assad for doing nothing in Golan would lead to full sectarian war in Syria.

if he continues to cause trouble for israel, he might lose what he has gained
with russian help.