Syria is a melting pot. It existed like this, like it is today because it is a melting pot with multifarious cultures for centuries, before Christianity and after Christianity, before Islam and after Islam. If you have any change, dramatic change, in the demographic and social fabric of the Syrian society, you're going to have a big problem in the future regarding the future of Syria.
Syria, using the term in its old, geographical sense, occupies a unique place in the annals of the world. Especially because of the inclusion of Palestine and Phoenicia within its ancient boundaries, it has made a more significant contribution to the moral and spiritual progress of mankind than any other comparable land. Small as it appears on a map or a globe, its historical importance is boundless, its influence universal.
I don’t really think there is any kind of a reasonable argument against intervention in Syria. Quite the opposite: There is a moral and a human imperative to act that is larger than any nation’s interests and larger than any strategic calculation. That is so obvious it is an embarrassment to have to say it. This is how I thought about intervention in Iraq 20 years ago and it is how I think about what needs to be done in Syria today.