Iran, powers explore nuclear compromises, Israel alarmed

By Louis Charbonneau, John Irish and Parisa Hafezi LAUSANNE, Switzerland (Reuters) - Iran and six world powers tried to break an impasse in nuclear negotiations on Sunday, but officials cautioned that attempts to reach a preliminary deal by a deadline in two days could yet fall apart. The two sides explored compromises in areas including numbers of centrifuges used to enrich uranium that Iran ...