The latest IISS Strategic Comment, which ends with:
While direct intervention in Syria remains remote, the issue will remain a burning one for Syrian opposition leaders and Western, Turkish and Arab policymakers as the toll increases. Without a legal UN mandate and solid Arab cover, the practical and strategic risks may well outweigh humanitarian considerations. Tragically, the longer they wait to intervene, the stronger the case for intervention will be - but the costs will also be greater.
I'd missed this aspect of a no-fly zone:
Syrian coastal defences would need first to be nullified. (They boast, in particular, SS-C-5 Stooge (Bastion) supersonic anti-ship missile coastal defence missile batteries supplied by Russia within the last two years.)
Link:http://www.iiss.org/publications/str...d-but-distant/