This opportunistic karunanidhi enjoyed five years with BJP and got written an agreement with janardhan reddy in congress to get important portfolios for his party and then only he has switched loyalty to congress .Not because of country on communalism. You fools better understand politics and talk rationally. After congress assumed governance the moment karunanidhi did not get the portfolios he has openly displayed the letter .He is only for his family This antinational will go to any extent to retain power.When MGR was bedridden in US he begged tamil nadu people for votes telling MGR is dead and if he comes back he will hand over power to MGR. Still he got defeated such is the credibility of this antinational karunanidhi. please do your home work properly and post your articles