The Impact of Modern World War on Global Stability Modern world war has had a significant impact on global stability. Large-scale conflicts, such as World Wars I and II, have changed the geopolitical, economic and social map throughout the world. The military power involved in the war not only affected the countries involved, but also spread to other parts of the world. The process of decolonization driven by the effects of war has also changed the political and social order in various countries. First, the economic impact of modern world wars created instability in many countries. The very high costs of war caused many countries to experience inflation and large debts. For example, after World War I, Germany faced severe hyperinflation that contributed to the rise of Nazism. This disrupted economic stability has an impact on relations between countries and creates tensions that can trigger further conflict. Second, changes in the post-war global political order were striking. World War II resulted in the creation of the United Nations in an effort to prevent future conflict. However, despite the existence of international organizations, rivalries between great powers such as the United States and the Soviet Union during the Cold War created prolonged instability in various regions. This tension often triggers proxy wars in third countries, such as Korea and Vietnam. Third, the social impact of modern world war is profound. Many nations have experienced massive displacement due to armed conflict. Cities were destroyed and communities divided, resulting in social and ethnic tensions. For example, after World War II, Europe faced complex reconstruction amidst different social integration challenges. Fourth, the sophisticated military technology that emerged during the war also created concerns about global security. Nuclear weapons, for example, have changed the way states approach military resilience. The rise of the development of weapons of mass destruction raises complex security dilemmas. Nuclear-weapon states often engage in complex diplomacy to prevent open conflict. Fifth, the cultural impact of modern world wars continues to influence national narratives in many countries. The spread of ideologies such as socialism and capitalism, which became increasingly polarized during the Cold War, has left a legacy that impacts contemporary politics. War is an important teaching material for subsequent generations and is often used to build national identity. Sixth, the environmental crisis resulting from modern world war is currently increasingly becoming a global concern. Environmental damage resulting from war, especially from the use of heavy weapons and poisons, disrupts ecosystems and creates problems for future generations. In the context of climate change, countries that have been involved in war must face long-lasting environmental consequences. The sustainability of global stability in the modern era is greatly influenced by the dynamics that emerged from world war. The rise of nationalism, climate change, technological developments, and international security issues are interrelated and shape the behavior patterns of countries throughout the world. By understanding these impacts, it is hoped that more effective solutions can be found to achieve more sustainable global stability.