For those who don't know him, creating a "tamil land" was karunanidhi's lifetime dream. He figured that he could not do so inside Indian subcontinent and trying hard for that in Srilanka. If a separate TL gets created in SL, it won't be long the tamil fanatics in India demand separation of TN and joining with Eelam.
Don't forget, the Jain commission report implicated DMK in Rajiv assassination. However, just look at Sonia who forges political alliances with DMK! Sonia is an opportunist and a mole of Roman Catholic Church. And Congress is guilty of aligning with DMK in spite of DMK's known sponsorship of LTTE.