Our options, more importantly the options of the Iraqi people, are to dismiss this small fringe of assholes who want to provoke a civil war.
It isn't the entire Sunni sect that did this, it's a group of fundamentalists who don't give a shit about Iraq. We need to try to guard against reprisals, but it's also up to the IRAQIS to stand together, and crack down on these so-called insurgents.