Imbalances worsen
The International Monetary Fund is worried that this trend will continue, increasing the risk of a sudden adjustment at some point in the future.
The economic argument is familiar. The US current account deficit is not sustainable in the long run. If private investors lose faith that a gradual adjustment is feasible, or foreign central banks stop accumulating US assets, the dollar could fall sharply. This would probably prompt a similarly abrupt rise in US interest rates, which could kill off the US housing and consumption boom and explode over- leveraged financial institutions, with severe global consequences.
Two months ago Alan Greenspan suggested that market forces appeared "poised to stabilise and, over the long run, possibly to decrease" the US current account deficit. The IMF believes the current account deficit will indeed stabilise but at an unsustainable level: about 5.7 per cent of gross domestic product in 2005 and 2006, unless the dollar falls further.
The immediate culprit is the widening growth differential between the US (and China and the UK) on the one hand, and the eurozone and Japan on the other. The US has powered ahead. But growth faltered in the eurozone and Japan. The IMF now expects the eurozone to grow at only 1.6 per cent and Japan at 0.8 per cent this year. It wisely urges the European Central Bank and the Bank of Japan not to jeopardise this - though, bizarrely, it still thinks Japan should raise taxes.
Policymakers have shirked their responsibilities to tackle the underlying causes of the imbalances. The US is not doing nearly enough to reduce government borrowing; the eurozone is moving too slowly with growth-promoting labour market reforms; Japan still has its own structural problems to overcome; and Asia as a whole is resisting currency appreciation.
The news is not all bad. Emerging and developing economies enjoyed strong growth last year and are likely to do well again this. Even sub-Saharan Africa grew at more than 5 per cent last year and is forecast to do so again this year and next. This is a tribute to better economic policymaking as well as strong commodity prices and a fortuitous reduction in conflict and drought. But the world's most fragile economies can only prosper in a benign global environment. Imbalances put this at risk.
The IMF's analysis is sound. Now is the time for more effective advocacy. The IMF cannot tell powerful countries what to do but it should assert a bigger role in forging an effective multilateral strategy to tackle imbalances. This is the test for Rodrigo Rato, its managing director. This weekend's spring meeting is the place to start.

