Nickyjames, IMO it's a shame that you're apparently unable to engage with the thoughts of Liberal Party doyens whose views are diametrically opposed to your own on this matter.
IMO Australia will be safer in future if we assist with humanitarian aid in the Middle East for the same reasons we are safer today because of our response to the mass emigration from war-torn Europe post WW2. The Middle East will be better placed to stabilise and thereafter return to its place among the World's nations. Those to whom we provide refuge will be eternally grateful and either become you-beaut Aussies or return to help rebuild their homelands when normality resumes.
The alternative, wherein we allow mass slaughter and inhumanity on a scale not seen since Hitler's extermination of Jews, is an unthinkable risk. Desperate people will do increasingly desperate things just to stay alive and the risk of escalation of the situation into WW3 is not beyond the realms of possibility [eg. Assad's Syria-Russia-Iran-China-Libya-Yemen-NorthKorea-Etc vs Coalition of the Willing?].
Please note that since I'm not afraid of other peoples / cultures and since I'm an atheist, the religion other people choose is of no interest to me - it's their choice and I respect their right to do so.
IMO you're unnecessarily working yourself into a lather in thinking all Muslims are head loppers and all Christians are saints; IMO that's paranoia getting the better of you! Indeed, atrocities have been committed in the name of all religions known to me and by rabid, self-serving barbaric mongrels ranging from Anders Breivik to Saddam Hussein.
Sadly, it's not just rabid mongrels who have been at fault. I gather you're aware that Argentinians [passionate Catholics] aren't very happy with what they regard as Margaret Thatcher's opportunistic invasion of Tierra Del Fuego - I've visited their memorial in Buenos Aires by the way and seen how badly affected people are to this very day.
Now, if I was facing the decision as to which people to put in the last chopper leaving a war zone as enemy soldiers were approaching I wouldn't waste time asking them their age, religion, parentage, race, wealth etc. I'd take the youngest kids first, all kids next, their mothers and then the injured and maimed.
Returning to the issues you raised about Syria and the crimes being committed against humanity, I gather you are aware that about 75% of them are reportedly due to the war being waged by the Assad Regime against its own people, itself apparently with the support of Russia and Iran; some 240,000 people to date! I gather that you're also aware that the West virtually turned a blind eye to mass exterminations by that regime and watched on in disbelief as hundreds of thousands of people were slaughtered.
Desperate people do desperate things to survive and IMO the situation today is Hell on Earth and likely to get worse as the West bombs rebels being bombed by Assad! IMO Assad's regime will fall but as it does so it'll slash and burn what currently remains of Syria.
As for places like Turkey and Lebanon being safe havens; the sheer weight of numbers is at risk of destabilising those nations by crippling their economies and diluting the social fabric. The World cannot afford to have nations like Turkey, Egypt and Greece being torn apart.
Some of your comments appear to suggest that further military engagement throughout the Middle East by the Coalition of the Willing will achieve something that the last 12 years of it have not achieved.
The answer to that lies in what happened in Vietnam, and after 12 years of failure it's about time that people realised bombing other nations back to the Stone Age can make matters very much worse - as Saddam Hussein even foretold!
Now please do yourself a favour and read what Jeff Kennett and Fred Chaney have said about the matter!
