The Impact of Modern World Wars on Geopolitics Modern world wars, which include major conflicts such as World Wars I and II, have profoundly changed the geopolitical landscape. The rise of new powers, the formation of international alliances, and changes in centers of power are some of the significant impacts that have given rise to the current geopolitical reality. First, World War I caused the disintegration of major empires such as the Ottoman and Austro-Hungarian. This created a power vacuum which was exploited by the newly independent countries, which prioritized nationalism as the main ideology. The establishment of new borders, often without consideration of ethnicity and culture, contributed to later conflicts and shaped today’s complex Middle Eastern geopolitics. Subsequently, World War II brought greater changes, particularly in creating global bipolarity. The dominance of the United States and the Soviet Union as new superpowers changed the dynamics of global politics. Policies such as Self-Trick and the Truman Doctrine are examples of how active US involvement changed international alliances and created clear geopolitical blocs. When the Cold War peaked, the world was divided into two ideological ideologies, capitalism and communism. This created tensions that led to proxy conflicts in various parts of the world, from Korea to Vietnam. The impact of this phase not only changed international politics, but also increased instability in countries caught in ideological conflict. Post-Cold War, the emergence of globalization has reached its peak. Countries began to share interests in the economy, although regional conflicts remained. The emergence of new powers such as China, India, and Brazil shows a shift away from Western dominance and towards a more complex multipolarity in today’s geopolitics. The issue of climate change and natural resources is now a new geopolitical challenge. Competition over energy, water and food will increasingly influence relations between countries. Countries with abundant resources often become the center of attention in global geopolitics, raising issues of security and international cooperation. On the other hand, international terrorism and cyber threats pose significant challenges to global stability. Countries must confront a broader concept of security, beyond just the military. Cooperation between countries to face these non-traditional threats is important in forming new alliances and foreign policy strategies. Overall, the impact of modern world war is not only felt in a military context, but also in political, economic and social aspects. Each conflict brings outcomes that require countries to adapt to new dynamics, creating a complex and ever-changing geopolitical architecture. This change requires world leaders to focus on diplomacy and cross-border cooperation as a strategic step to create long-term stability on the global stage.