Listened to this as a podcast last week and thought in very interesting. Even got the transcript as its very relevent to an assignment I'm doing in Globalization. You can listen as a podcast or listen on BBC iplayer: http://www.bbc.co.uk/radio/aod/radio4_aod.shtml?radio4/analysis
But as this programme discovers, the dollar may no longer remain such a pillar of US power.
Before the crisis its value had been steadily declining. That suited many Americans and their political leaders - a weaker dollar boosted US exports and manufacturing jobs.
But no longer can the powers that be in Washington tell the rest of the world, as a 1970s Treasury Secretary once did, that the dollar is "our currency, but your problem". And the crisis has raised new questions about how far the US can afford its foreign policy commitments and its need to keep the domestic economy afloat.
But if they decided to switch allegiance they could suddenly destabilise the US currency. It's been called a "balance of financial terror" that the US must now live with.
If the dollar is in decline as a global currency, what of the alternatives? The euro has a global role, but no political leadership to match that of the US. Many expect the Chinese currency to rival or overtake the dollar as the global balance of economic power changes, but that will take time.
So in the meantime, we are left with a world in which the dollar plays a more and more controversial and uncertain role - still a key pillar of American power, but a currency over which the rest of the world has more and more control.
Contributors:
Avinash Persaud, Chairman of Intelligence Capital Limited
Barry Eichengreen, Professor of political economy, University of California, Berkeley
Harold James, Professor of History, Princeton University
David Marsh, author "The Euro: The Emerging Global Currency"
Dr Albert Park, Reader in Economics, Oxford University
Jim O'Neill, Head of Global Economic Research at Goldman Sachs
Presenter: Ngaire Woods
Producer: Chris Bowlby
Editor: Hugh Levinson