As the world economy recovers, it is inevitable that central banks will eventually increase interest rates from the emergency levels of last autumn. Then, amid fears the terrorist attacks on the US on 11 September might trigger a global collapse in consumer and business confidence, the ECB and the Bank of England followed Washington's lead and chopped. By 11 December, the US Federal Reserve had cut to 1.75%, against the ECB's 3.25% and 4% at the Bank of England.