The world has changed since Waltz's first major publication on international relations, although his analyzes are still widely considered correct. Waltz, was an American political scientist who was a member of the faculty of the University of California, Berkeley, was considered one of the most eminent scholars in the field of international relations. In this book, Man, the State, and War, Waltz reevaluates modern political thinking about the human nature of man and how it transcends war. Using political thinkers such as Machiavelli and Hobbes, Waltz is able to portray human behavior as the main reason why countries go to war. According to Waltz, war is a timeless quality that can be depicted throughout history. Although many different ideas about the causes of war have been thought and philosophized, the nature of war has not changed. Man has and will always find a reason to go to war with other men, whether using rocks and spears, or missiles and bullets. In the end Waltz tries to answer: why do states go to war? Waltz states that a solution to ending the war would be a world government to stabilize the anarchy of states' behavior. The title of this book suggests the three crucial aspects of the causes of war according to Waltz: the nature of man, the existence of the State and the international system. According to Waltz, human behavior is a major reason why states end up going to war. war between them. Man is fundamentally selfish, always looking for ways to benefit himself over others. With a limited amount of land and raw materials, man would do whatever was necessary to accumulate as much wealth as possible. With an aggressive impulse man reacts unreasonably to situations he does not understand, which leads to conflict....... middle of paper ......use their own means, even peaceful states will have to arm themselves to protect their seventy. Therefore, war occurs because there is nothing to prevent it. Conclusion The Waltz Theory of Why Countries Go to War is required reading for all international students, the ideas that are achnolegge have long been used to predict the action of states and to form foreign policy. Wetzel recognizes the history of war and its three main causes give his theory a good foundation. However, Waltz does not suggest that there might be other factors that explain why states go to war. The waltz ignores economic factors, different cultures and religions. Focusing exclusively on man and his nature, the waltz rejects every possible alternative. I certainly enjoyed reading this book and would recommend it as a first step to anyone who wants to better understand why states go to war.