On The DMZ, Bill and Matt debate what the embassy attacks in Egypt and Libya tell us about Obama's policies in the Arab world. Has the Arab Spring been a positive or a negative development? Bill suggests neither Obama nor Romney wants to engage in a general debate about foreign policy. They disagree over whether it makes sense to compare Obama to Jimmy Carter. Matt argues that despite Obama's post-convention bounce, the election will still come down to the wire. Plus: Are Obama and Romney introverts?