Rajat Nag - Managing Director General, Asian Development Bank

We've become used to the idea we're living in Asia's century; that India and China are leading and irreversible shift of power from West to East. But is time to challenge the new orthodoxy? Asian nations face huge unresolved challenge of poverty, poor governance and environmental degradation. Stephen Sackur speaks to Rajat Nag, managing director of the Asian Development Bank, and asks: are reports of Asia's economic advance somewhat premature?