This is a classic treatise on the ethics of war - now with a new preface addressing the war in Iraq. This classic work examines the issues surrounding military theory, war crimes and the spoils of war from the Athenian attack on Melos to the My Lai massacre. Subsequent editions have commented on more recent conflicts including the Balkans war and the first Iraq war. ''Just and Unjust Wars'' examines a variety of conflicts in order to understand exactly why, according to Walzer, ''the argument about war and justice is still a political and moral necessity.'' Walzer's classic work draws on historical illustrations and the testimony of participants - decision makers and victims alike - to examine the moral issues of warfare.