This week, Prime Minister David Cameron “promised Britons a vote on quitting the European Union, rattling London’s biggest allies and some investors by raising the prospect of uncertainty and upheaval” (Reuters, January 23, 2013). Mr. Cameron promised a vote by the end of 2017, pending his reelection, stating “It is time for the British people to have their say. It is time for us to settle this question about Britain and Europe” (ibid.).