International affairs questions concentrate on organisations and summits. For each body, learn the year of formation, headquarters and current head - the UN in New York, WHO in Geneva, IMF and World Bank in Washington DC.
Groupings matter too: G20, BRICS, SAARC, ASEAN and QUAD. Remember membership and India's role, and note the host country of the most recent summit.
Bilateral visits and defence exercises are the third area. Keep a one-line entry per exercise with the participating countries.