I wouldn't want to hypothesize on what could have happened. But I think that if you look at the advance, just in the context of Iraq, that ISIL had enjoyed very quickly, this is of great concern; hence why so many regional partners have joined some of our more traditional partners and other NATO countries in this coalition. There's a shared view that ISIL presents a threat not only to Iraq and Syria but also to regional stability and certainly to many western countries as well as their reaches.
I think that the very rapid stand-up of a coalition speaks volumes to the risk that many countries feel that ISIL represented at the time and continues to represent today.