THERE are many ways to decide whether to repay your debts but a national referendum is surely a first. That is what is going to happen in Iceland after its president refused to sign a bill paying €3.8 billion ($5.5 billion) to the British and Dutch governments over 15 years. Given that a quarter of the Icelandic population has signed a petition opposing such payments, it is not difficult to imagine how such a poll will turn out.