Another day, another attack ad. This time the McCain camp has built an ad around comments Hillary Clinton made during her campaign for the Democratic nomination, when she raised the question of Obama’s readiness for office.

The ad is built around the “3 am phone call” scenario. As RealClearPolitics notes, the ad uses “uses images of tanks, a rocket launch and foreign militants marching, as well as a clip of Clinton touting McCain’s experience and playing down Obama’s”.