Obama's Middle East allies are signing up for the fight against the Islamic State. But it's not for the reason you think.
Arab states have a new defining cause: the war on terror. Almost four years ago, popular uprisings across the region upended an old order and created a new set of aspirations and a new collective meaning. That was the Arab Spring; save in Tunisia, where the spirit survives, it lasted for two years at the most before giving way to chaos and violence, backlash and regret.