Alliances and treaties significantly shape geopolitical strategies by establishing formal relationships between nations that can influence military, economic, and diplomatic actions. These agreements often determine a country’s defense posture and trade agreements, enhancing security through mutual cooperation. For example, military alliances like NATO provide collective defense guarantees, while trade agreements can open markets, fostering economic interdependence. Additionally, such strategic partnerships can deter aggression from rival states and enhance a nation’s global standing, ultimately affecting how countries interact on various issues, including climate change and human rights.