Foreign policy refers to a government's strategy in dealing with other nations. It encompasses a wide range of activities, including diplomacy, trade agreements, and military actions. The goal is often to protect national interests, promote economic growth, and ensure national security. Countries develop their foreign policies based on various factors, including historical relationships, economic needs, and global events. For instance, the foreign policy of the United States has evolved significantly over the years, influenced by events like the Cold War and the rise of China as a global power.