Top US hedge fund managers plot killings from eurowoes at "idea dinner" in Manhattan. See also this descriptions how hedge funds bet against euro.

Use the Mundell Fleming Model, augmented to account for risk and debt,  to analyze why George Soros [aka the man who broke the Bank of England] says: "the euro's construction is patently flawed" as he argued that "a fully fledged currency requires both a central bank and a Treasury."

George Soros at the World Economic ForumAnnual Meeting 2010