“They poured everything they had into this place.... And they lost."

Here is the full quote.

“They poured everything they had into this place. The battle against Americans in Anbar became their most important fight in the world. And they lost.”

Of course, the quote is about Fallujah, and Michael J. Totten wrote it. I read this article about the First, Second, and Third Battles for Fallujah as a microcosm of our presence in Iraq...to leave Iraq will invite al Qaeda back in, and we cannot allow them to believe they've beaten us.