"ISIL poses a threat to the entire civilized world," President Obama said in his Saturday radio address, as he explained what he's doing to counter the threat posed by radical Islamic extremism -- a phrase he refuses to use. In addition to waging war and diplomacy, Obama said Americans, for their own good, must welcome Muslims into their midst: "As we move forward in this fight, we have to wield another weapon alongside our airstrikes, our military, our counterterrorism work, and our diplomacy.