Italy's Letta: UK 'is EU's big risk'

When Italian Prime Minister Enrico Letta visits London later today his words will be analysed closely. He is, at 46, a relatively young Italian leader.

He is open, a fluent English-speaker and pragmatic. He is precisely the kind of European leader that David Cameron will have to get on side if he is to have any chance of successfully renegotiating Britain's relationship with the EU.