How to prepare bilateral and multilateral international relations for UPSC?

Prepare International Relations by using a "concentric circles" strategy, focusing first on India’s neighborhood and then global powers.
Analyze bilateral and multilateral (G20, Quad) ties through the lens of security, trade, and energy interests.
Use Ministry of External Affairs briefs and expert insights from S. Jaishankar or C. Raja Mohan to substantiate answers, always linking current diplomatic shifts to India’s long-term strategic goals.