Ian Shepherdson, Pantheon Macroeconomics' chief economist, says Italy leaving the Eurozone would be an "end of the world event," while TS Lombard Research's chief economist, Shweta Singh, says things won't dramatically change after the Italian referendum. Then, Stephen Schork, editor of the Schork Report, says the OPEC deal is great news for U.S. producers. Finally, Anthony Scaramucci, co-managing partner of SkyBridge Capital and an adviser to Donald Trump, says Trump will use trade tariffs as a last resort.