One of the world's most influential philosophers here considers the ethical issues surrounding globalization, showing how a global ethic rather than a nationalistic approach can provide illuminating answers to important problems. In a new preface, Peter Singer discusses how the recent Iraq war and its aftermath have changed the prospects for the ethical approach he advocates.Q: What was your original idea for the book? A: When people talk about globalization, they usually mean the lowering of barriers to free trade and the flow of investment. And they usually don't see these as ethical questions. I wanted to bring together several different issues that are also part of living in a more globalized world and show that they are, at their core, ethical questions. So as well as trade issues, I cover climate change, intervention across national borders to protect human rights, and aid from rich nations to poor ones. Q: Have world events in the past three years further shaped that idea and your arguments? A: Definitely. The attacks on 9/11 showed that even the mightiest power the world has never known is vulnerable to being attacked. But more significantly, the crisis over Iraq posed a choice between taking the path of international cooperation, and that of unilateral action. It was also a choice between the rule of law and the rule of force. Unfortunately, the United States made the wrong choice. Q: What do you hope the book will accomplish? A: I hope it will contribute to people seeing these questions as ethical issues and to looking at ethics from a more global-and therefore less national-perspective.