Since the success of the best-selling first edition, the world has remained fascinated with US foreign policy, not least because of the far-reaching consequences of the US led invasion of Iraq. This fully updated textbook follows the events of the past two and a half years including the 2004 presidential campaign, whilst still providing a comprehensive introduction to all aspects of American foreign policy. Chapter headings include: - from colony to superpower - the post-Cold War decade - the role of Congress - the media and public opinion - the US and terrorism. Examining the administrations of George Bush, Bill Clinton and George W. Bush, it explains the complex interaction between the institutions of power, the key actors and the non-governmental organisations to give a complete picture of foreign policy. With a complete glossary of terms, this textbook is ideal for those studying American Politics or International Relations.