Karunanidhi is basically a seperatist who does no belift in federal set up.Knowing his color and attitude Then P.M Indra gandhi kept him in his place.Sonia who does not know about India or Indian politics started likcking th shoe of Karuna.KAruna a poisonous snake started its action.This is required for Central goverment and peopole who voted this venomous snake to power and also the fools who are following karuna.