Democratic Debate Analysis; Jim Nantz; ISIS in Libya

Journalists Mark Halperin, John Heilemann, Glenn Thrush, Gerald Seib, and John Cassidy analyze the Democratic debate in New Hampshire. CBS Sports broadcaster Jim Nantz shares his thoughts on the upcoming Super Bowl between the Carolina Panthers and the Denver Broncos. Frederic Wehrey, Alan Kuperman, and Jean-Marie Guéhenno discuss concerns over a growth of the Islamic state in Libya.