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When a Tory leader speaks about Europe, precision is all. Such is the toxicity of the issue in Conservative ranks - it leads some apparently rational people to do some deeply irrational things - that saying something unclear is worse than saying nothing at all. William Hague's '12 days to save the pound' was pretty straightforward, for all the good it did him against Tony Blair. John Major's 'wait and see', however, was not, and it led him into all sorts of trouble.