To stay updated with relevant international relations topics for UPSC, candidates should regularly follow trustworthy news sources and publications focused on global affairs like newspapers, journals, and policy papers. Engaging with online platforms, such as webinars and discussions on current issues, can deepen understanding. Subscribing to top foreign affairs magazines and utilizing platforms like YouTube for expert analyses help in grasping complex international dynamics. Consistent study and application of this knowledge in essays and interviews are critical.