joining me now, cnn's fareed zakaria, richard haus, presidential historian douglas brinkley and nile ferguson. welcome to what has to be the single most stellar panel i have had in two years at cnn, gentlemen. thank you for joining me. a lot to get through tonight. let's start with margaret thatcher. nile ferguson, as a fellow brit, where does margaret thatcher rank in the pantheon of british prime ministers? >> second only to churchill. he was described as the savior of his nation and i think margaret thatcher was also the savior of her nation. you know, the others on the panel won't know what britain was like in the 1970s, but you and i know, piers, that the country was in an appalling mess. she single-handedly turned that around. she is up there second only to churchill, in my view. >> fareed, rather like churchill, she got kicked out. churchill got kicked out of course after the second world war. british have a way of doing these things. but where does she stand globally, do you think? >> oh, i would agree, i think in some ways, in some ways, she's more consequential than churchi

douglas brinkley credited the polling surge to president bush to what was the most traumatic event ofhe bush years. >> i think that because 9/11 is such a defining moment in our lives like pearl harbor or the kennedy assassination, people will start remembering 9/11 and do recall that george w. bush in my opinion did a pretty good job of uniting the country in those weeks of dire need. >> there is much more to the bush 43 legacy, of course. tax cuts, no child left behind, the war in afghanistan and a major push against aids in africa. when henry kissinger told nixon history would be kinder, nixon replied, that depends on who's writing the history. bret. >> our resident historian james rosen. james, thank you. >>> getting to the root of radicalization. we'll talk about the search to find the reasons for the boston marathon bombing. the buzzoff stars join me after a quick time-out. >> the architectural signature of the bush presidential library is this. freedom hall. it's a 67 foot tall area. there's a lantern type thing on the top, but you can see there's a 20 foot tall screen. 360 deg