A comprehensive deal sounds good for now. But, at some time in the future the Iranians will not be a threat, due to some internal event (change in regime) or external (war). At that point, I’d trust the Saudi’s to not being a threat to Israel. But the Syrians would be another story; Hezbollafied Lebanon perhaps too.Without Syria Hizbollah withers on the vine. No access to weapons. Syria has been trying to be a western client for ages(since the Clinton admin), they just want to do it on their terms(i.e. no silly things like democracy that would get rid of Alawi power). Syria is quickly losing influence, they risk becoming a western or Iranian protectorate.
Syria is in bed with Iran, which supplies weapons and training to the "Part of God". The banner of Hezbollah bears a striking resemblance to that of the Iranian Revolutionary Guard. You know, the same guys who manned those speedboats that attempted to harass our ships in the Strait of Hormuz.
Blue is IRG, Yellow is Hezbollah