Jefferies strategist David Zervos is back again with new recommendations about how the U.S. could step in and save the global economy. This week: threaten complete disaster if EU leaders don't act right away. Akin to what he said about the matter last week: The game in Europe is as we have described many times before - the Germans want budgetary control throughout all of Europe and the rest of EMU wants Eurobonds. Its a game a chicken with the entire global financial system on the line. The US should not allow itself to become a casualty in this Euro...