Former IMF Chief Economist Kenneth Rogoff says India's currency crisis is exacerbated by policy implementation issues. Then, Daniel Yergin, the vice chairman of IHS, says the OPEC production deal will work. Also, Harvard's Nicholas Burns says President-elect Donald Trump should align himself with German Chancellor Angela Merkel. Finally, chess grandmaster Fabiano Caruana says Magnus Carlsen's opponents can never recover, once the current world chess champion gets even a tiny advantage over them.