Muslim Brotherhood has a deep root in Syria as in Egypt. I don't want Syria to be a playground of Muslim Brotherhood any more than you do. There are parties helping Assad now, as I have described before. Would Israel sit by and let Assad fall? I doubt it. They could help Assad in some way. Allowing them to help Assad enough to grind down Muslim Brotherhood seems to be one way to do it. If ruling secular military regime starts to show cracks, it would be impossible not to expect Muslim Brotherhood to raise its head. It would happen whether we intervene or not.