President Murmu confers Bharat Ratna on 4 luminaries posthumously

President Droupadi Murmu confers Bharat Ratna on former PMs P V Narasimha Rao and Chaudhary Charan Singh, M S Swaminathan, and Karpoori Thakur posthumously. PM Modi to honor L K Advani at his residence. Family members accept awards. Rao and Singh introduced economic reforms, Swaminathan boosted food self-sufficiency, Thakur served as Bihar CM.