International refers to anything that involves or relates to multiple countries or nations. It can refer to events, organizations, or activities that take place outside of a single country or that involve multiple countries. In the context of politics and diplomacy, international relations refers to the interactions and relationships between different countries and their governments. International trade refers to the buying and selling of goods and services between countries. International law is a set of rules and principles that countries agree to follow in their interactions with one another. International organizations, such as the United Nations, the World Trade Organization, and the World Health Organization, are established to promote cooperation and coordination among nations on issues of global importance.