Hardtalk speaks to a man from the highest echelons of the US foreign policy establishment. Dr Richard Haass has worked in the State Department, advised US presidents, and is now president of the influential think-tank the Council on Foreign Relations in New York. He believes we are witnessing the end of one era of world history and the dawn of another. A new 'era of disorder' - more chaotic and more dangerous than any time in a generation. He says American foreign policy is partly to blame and US authority has been diminished. So how dangerous is the world now? And what could be done about it?(Photo: Dr Richard Haass. Credit: Reuters)