In an increasingly interconnected world, the realms of cybersecurity and diplomacy are inextricably linked. This course provides a comprehensive examination of how cyber threats and digital technologies impact international relations and global security. Students will explore the strategic, legal, and ethical dimensions of cybersecurity within the context of diplomacy. Key topics include cyber warfare, cyber espionage, the role of international organizations, and the development of global cybersecurity policies and norms. The course will also delve into the challenges of establishing international norms governing behavior in cyberspace, analyzing why consensus is difficult to achieve among diverse nations. Through case studies and expert guest lectures, students will gain practical insights into how nations negotiate, collaborate, and confront challenges in the cyber domain. By the end of the course, students will be equipped to analyze and address complex cybersecurity issues from a diplomatic perspective, fostering a safer and more cooperative international environment.