As we used to say when I was privileged to be the commander there, Nineveh province has the most diverse human terrain in all of Iraq - Sunni Arab majority to be sure, but also Shia Arabs, numerous Kurdish communities, and they are broken out into several different political parties.

I'm heartened that, for the first time, we're seeing some of the Internet Service Providers and the social media sites taking action against the Islamic State. That's the kind of initiative that can very, very much augment on an industrial scale what the government is trying to do.

We can put a stake through the heart of Islamic State as an army. We can put a stake through the heart of its leaders. You can take away its territory. But you can't put a stake through the heart of the ideas, of the ideology, that sadly, tragically, still has some attraction for some small numbers in the Islamic faith.

David Petraeus Quotes