Nobel laureate Amartya Sen on Monday called for unity in opposing the Citizenship (Amendment) Act, or CAA, saying "if there is no unity, protests won't work". His comments came several key parties like the Trinamool Congress, DMK and BSP skipped a meet called by the Congress to discuss the citizenship law. Retail inflation in December at 7.35 per cent has been the worst since July 14, government data revealed. Here are other top stories for the day.