A new study by a German think tank warns that a euro exit by Greece, Spain, Portugal and Italy would cut global GDP by 17 trillion euros and plunge the world into recession, with France suffering the biggest loss. A Greek exit alone would be manageable, but must be avoided to forestall a domino effect, it says. A Greek euro exit on its own would have a relatively minor impact on the world economy, but if it causes a chain reaction leading to the departure of other Southern European nations from the single currency, the economic impact on the world would be devastating, a German study warned on Wednesday. Economic ... (full story)