Watch live coverage and analysis of the presidential candidates’ debates.

Bob Schieffer, chief Washington correspondent, CBS News, and moderator, “Face the Nation,” moderates the debate. The debate will focus on foreign policy and be divided into six segments of approximately 15 minutes each on topics to be selected by the moderator and announced before the debate. The moderator will open each segment with a question, after which each candidate will have two minutes to respond. The moderator will use the balance of the time in the segment for a discussion of the topic.