NBC’s Kristen Welker reports the latest on negotiations over a possible U.N. resolution on Syria’s use of chemical weapons; then The Washington Post’s Eugene Robinson and Lehigh University’s Dr. James Peterson join guest host Jonathan Capehart to discuss what may come of Secretary of State John Kerry’s negotiations with the Russians – and the oddity of finding oneself in agreement with Sen. Rand Paul, R-Ky.Sept. 13, 2013