At a gala dinner framing the 18th BRICS Summit in New Delhi, Malaysian Prime Minister Anwar Ibrahim sat at a piano and sang a 1965 Kishore Kumar love song — not as performance, but as expression. In a gathering otherwise devoted to declarations on multilateralism and global conflict, the moment reminded the room that the deepest diplomacy between nations is often carried not in treaties, but in shared memory and song. India and Malaysia left the summit with a Comprehensive Strategic Partnership, but perhaps also with something harder to quantify: the warmth of a leader who knows another countr