Americans are already deep in a culture war over morality—marijuana, abortion, same-sex marriage. We are already racially polarized over affirmative action and income inequality. And when we have ceased to be an English-speaking, Christian country and become instead an Asian-Hispanic-African-American-white nation, with large Jewish, Christian, Muslim, Hindu, Buddhist, agnostic and atheist minorities, and no defined borders, or common faith and culture, what holds us together?

Military intervention for reasons of ideology or nation building is not an Eisenhower or Nixon or Reagan tradition. It is not a Republican tradition. It is a Bush II-neocon deformity, an aberration that proved disastrous for the United States and the Middle East.