Negotiators leave for the day after extending a deadline for an agreement on Iran's nuclear programme with talks due to resume hours later. Rough Cut (no reporter narration).
ROUGH CUT - NO REPORTER NARRATION Negotiations between the P5+1 world powers and Iran will continue on Wednesday (April 1) after no agreement was reached before a March 31 deadline. With Iran asserting its "nuclear rights", the talks in the Swiss city of Lausanne entered a seventh day, bogged down this time on the issues of nuclear research, the lifting of U.N. sanctions and their restoration if Iran breached the agreement. Officials cautioned that any accord would be fragile and incomplete, but the U.S. State Department gave the go-ahead for talks to go past a self-imposed midnight deadline. The six powers - the United States, Britain, France, Germany, Russia and China - aim to stop Iran from gaining the capacity to develop a nuclear bomb in exchange for easing international sanctions that are crippling its economy. Iran's oil exports have halved to just over 1 million barrels per day since 2012 when oil and financial sanctions hit. The outline political accord is meant to lay the foundation for a final settlement of the long-running nuclear dispute by June 30 - another self-imposed deadline, but one that Western powers have said they do not want to extend.