Britain's pro-EU campaign opens with warning: Don't turn your back on world

By Guy Faulconbridge and Elizabeth Piper LONDON (Reuters) - British pro-Europeans on Monday launched their campaign to keep their country inside the European Union, cautioning that turning away from the world's biggest economic bloc would hurt jobs and torpedo London's global financial clout. "Leaving Europe is a leap in the dark and I don't believe that is a risk that is worth us taking," said Stuart Rose, a former boss of Marks & Spencer who chairs the new "Britain Stronger in Europe" camp