Nazenin Ansari, the Iranian journalist, joins Sir David to discuss the vote. Ansari criticises the democratic credentials of the Iranian political system and says the poll will not lead to change in the country.
Ansari also says Iran is misunderstood by people who only focus on the last 30 years of the country's history.
Sir David talks to Hamish McRae, a columnist for The Independent, about the global economic troubles.
McRae says the downturn is part of a global economic cycle and warns that things will get worse before they get better.
But, he says the powerful economies of China and India are keeping the world economy afloat.