spilling over to lebanon as taken several leaders from the former prime minister hariri until now. there has been a protracted effort to knock out anti-shia islamists in lebanon. so this pro-western figure was part of a government that was pushing back on those shia islamist that is have taken over syria. harris: the civil war is playing out next door in syria yet our reporter conor powell this hour told us lebanon is a dangerous mess. why? it has proximity and iran has a decades-long relationship with hezbollah. terrorist vanguard, hezbollah has conducted violent attacks in lebanon and the broader region for some time. this arc of instability comes from tehran all the way to the mediterranean that is guiding these events right now. harris: all right. sit tight. we ll come right back to you. leland? leland: important stories ahead. including every year hundred of thousands of americans have knee surgery. now a new study warns that surgery may not actually be
of somalia. and that s been pushed back. i think it s important also to remember and this reminds us that there s more to the islamist political movement and its terrorist vanguard then just al qaeda. and so we re seeing in places like north africa, we re seeing in syria it s the front. and now in east africa, once again, seeing al shabab. so there are all of these groups in cahoots with al qaeda. when you talk about those groups, naturally as americans, we want to bring the focus here for a moment. it begs to ask the question, can those groups as you say as they re in cahoots, can they work in concert to have a formidable attack on america? al shabab has not demonstrated an ability to act outside of its own region yet. never say never, it s been a long time since the strike on the u.s. homeland so you always worry about that. i think what s more concerning is just the steady political