European diplomacy refers to the methods and practices used by European countries to manage their relationships with one another and with non-European nations. It involves negotiations, treaties, and alliances aimed at promoting peace, security, and economic cooperation. Key institutions like the European Union and the North Atlantic Treaty Organization (NATO) play significant roles in facilitating diplomatic efforts among member states. Historically, European diplomacy has been shaped by events such as the Congress of Vienna in 1815 and the Treaty of Versailles in 1919. These events aimed to resolve conflicts and establish a balance of power in Europe. Today, European diplomacy continues to address global challenges, including climate change, migration, and security threats.