The CBI has clearly told the home minister that a case can be filed against the former Central minister Raja regarding the 2G scam. Azhaigiri and Karunanidhi have also indirectly indicated to the Congress that Raja should be sent behind bars. Only after that did Sonia meet with Karuna and talked about the forthcoming Tamilnadu Vidhan Sabha elections and made the party’s stand clear – if Karuna wants, the parties can contest elections as separate entities but should stay aligned together in the Lok Sabha elections, so that the DMK-Congress stays in the Centre. Karuna probably doesn’t have a choice but to tow the line.