This is beyond dumb. Believing in the saving power of a “moderate Sunni” wave is as politically correct though patently silly as believing in global warming after years of record cold. All know that the Kurds will fight only for Kurdistan. The Iraqi army has proved beyond doubt that, as a fighting force, it exists only insofar as it is composed of Shiite militias.

But our inward-looking, bipartisan ruling class refuses to deal with reality. War consists of massive killing that dispirits the survivors. Yet our ruling class refuses to consider how many of what categories of people will have to be killed in order to end this war with the peace we want. War does not tolerate solipsism.

Yet again, consensus within the ruling class is setting America on course to demonstrate impotence. Its preferences, prejudices, and proclivities guarantee that the Islamic State and those among us whom it inspires will be a growing problem as months and years pass. Harsh consequences will follow until a political vehicle for the expression of the American people’s common sense comes into being.