What's the Big Deal about Benghazi?

Guest: Glenn Thrush, Chief Political Correspondent for Politico  Former Secretary of State Hillary Clinton spent a day last week being grilled by members of the House Select Committee on Benghazi. Her performance dominated headlines and news talk shows right through the weekend. All of this tracing back to the night of September 11, 2012 when terrorists overran a US diplomatic compound in Benghazi, Libya. Four Americans died: Ambassador Christopher Stevens, state department official Sean Smith and CIA contractors Tyrone Woods and Glen Doherty. An extremist militia leader from Libya has been charged with murder in the attack and is awaiting trial in the US.