International affairs are highly relevant in preparing for UPSC, as they encompass a range of issues in current affairs, global politics, and economics. Aspirants must stay updated on international relationships, treaties, and conflict resolution, as they often form part of the exam syllabus. In-depth knowledge enhances understanding of India's foreign policy and domestic implications. Furthermore, discussions on international affairs cultivate critical thinking and analytical skills, essential for essay writing and interviews. Thus, engaging with current international affairs is crucial for aspirants.