The foreign ministers of Iran and six world powers met on Monday in a final push for a preliminary nuclear accord less than two days before their deadline as Tehran showed signs of backing away from previous compromise offers. For days Iran, the United States, Britain, France, Germany, Russia and China have been holding negotiations to break an impasse in negotiations aimed at stopping Tehran having the capacity to develop a nuclear bomb in exchange for an easing of international sanctions that are crippling its economy. But officials at the talks in the Swiss city of Lausanne cautioned that attempts to reach a framework accord could yet fall apart. [ID:nL6N0WV09H] German Foreign Minister Frank-Walter Steinmeier said there had been “some progress and some setbacks in the last hours”. “I can’t rule out that there will be further crises in these negotiations,” he told reporters in […]