The heart of the matter. A war of Muslims against the Christians and the Jews.
But to lose focus and try and make this a holy war is not very bright. Our war in 1941 was not against all Japanese or Germans---only those on the other side of the oceans. The same must be true here. And Christians must undertake this war like all other just wars, by focusing on punishing evildoers (but not the innocent), executing "wrath" and protecting our own people (some of which are Muslims).