Newsnight - Season 2011 Episode 98

President Barack Obama has met Queen Elizabeth at Buckingham Palace at the start of his state visit to Britain. Later he will have a brief meeting with Prime Minister David Cameron, although their more substantive talks are scheduled for Wednesday. Tonight Mark Urban look at what will be topping the agenda at those talks and what both leaders will be hoping to achieve in them. Peter Marshall is focussed on Glencore which floated on the stock exchange today. He will be telling us more about this vast company - the world's largest diversified commodities trader - what it does and how it works. The ongoing fight by local communities to save their libraries will be shown in force tonight at Kensal Green, with writer Alan Bennett leading the charge. Stephen Smith is off to meet him. And we have an interview with porn baron Larry Flynt who will be talking about the connection between power and sex outlined in his new book One Nation Under Sex, a history of political sex scandals.