robert proctor on tobacco's history and the continuing dangers of smoking, sunday night at 10:00 eastern, part of book tv this weekend on c-span two. -- c-span2. senator graham's allegations that former secretary of state clinton mishandled the situation in benghazi, libya. they also took questions on the talking points used by un ambassador susan rice after the attacks. here is what he had to say. >> in advance of today's hearing on benghazi, senator lindsey graham said, i think the dam is about to break on den -- on benghazi. we will find people asleep at the switch, including hillary killington -- hillary clinton. what do you say about that? i say a couple of things. this administration has made extraordinary efforts to work with five different congressional committees investigating what happened before, during, and after the benghazi attacks, including over the past eight months, testifying in 10 congressional hearings, holding 20 staff briefings, and providing over 25,000 pages of documents. another leading senate republican said he feels he knows what happened in benghazi and is barely satisfied. much of what the witnesses were expected to raise in the h