Brian Williams wastes no time getting down to business, asking Barack Obama about his recent criticisms of Hillary Clinton. Obama responds nervously, with some sports story that neither I nor Dana got (go women's vote!) and making a stream of accusations against Clinton, including a slightly confused story about her Iraq war vote, when it sounded like he meant her Iran war vote. Clinton responds clearly and cleanly. John Edwards takes a more effective, or at least cleanly articulated, swipe next. Clinton parries deftly, going on the offensive against the president and ignoring the accusations against her in order to get her message out without looking like she's on the defensive.