外交, or "diplomacy," refers to the practice of managing international relations between countries. It involves negotiations, discussions, and agreements to promote peace, trade, and cooperation. Diplomats represent their countries and work to resolve conflicts, establish treaties, and foster friendly relations. The main goal of 外交 is to maintain stability and security in the world. It often includes activities such as attending international summits, participating in organizations like the United Nations, and engaging in bilateral talks. Effective diplomacy can lead to better understanding and collaboration among nations, benefiting global society.