Page last updated at 21:40 GMT, Tuesday, 31 March 2009 22:40 UK

G20: Summit to save the world?

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US President Barack Obama has arrived in the UK for his first major foreign visit since taking office in January.

Mr Obama and other world leaders are gathering in London for the G20 summit to try to achieve a global agreement on how to tackle the economic crisis.

Vicki Young reports.

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