President Obama and Mitt Romney met tonight for their third and final debate, the last chance for them to make their case to win the 2012 general election before a large audience.

The incumbent Democrat and his Republican challenger sat down - literally - for 90 minutes at Lynn University in Boca Raton, Fla., in a debate sponsored by the Commission on Presidential Debates. Bob Schieffer of CBS News moderated the session, which featured a roundtable discussion between the three focused on foreign affairs.