Why Eurozone should become United States of Europe, by David Cameron - by James Chapman and Alex Brummer

David Cameron was branded an EU ‘enthusiast’ by Tory Eurosceptics last night as he said Britain must let eurozone countries move towards a United States of Europe with a common economic policy.

The Prime Minister admitted he was not sure whether Germany and other countries had the political will to prevent a break-up of the single currency, but insisted they must be allowed to try – even if that meant closer integration.

The tumult on global financial markets intensified yesterday ahead of a crunch ruling by the German constitutional court on the legality of bailouts for debt-crippled nations.

Bill Cash, the Eurosceptic Tory MP who chairs the Commons European scrutiny committee, told the Prime Minister that while he had ‘certain reservations’ about the EU, it was clear that he was ‘actually rather an enthusiast’ for keeping the union together through integration.

Mr Cameron insisted he was a ‘practical Eurosceptic’ – but warned of economic disaster for Britain if the euro is allowed to collapse.

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