(AGI) Berlin, June 28 - British Prime Minister David Cameronhas suffered a serious defeat in failing to stop the formerLuxembourgian Prime Minister Jean-Claude Juncker from becomingthe next European Commission president, German newspaper DerSpiegel wrote. Cameron has left Britain isolated, with only thesupport of Hungarian Prime Minister Viktor Orban. It was thefirst time a great state like the Britain had been left aloneon such an important issue, the newspaper pointed out. . .