Reuters reports the U.N. nuclear watchdog was expected to issue a monthly update later on Wednesday showing Iran is complying with the terms of last year's interim deal with six world powers to curb some of its atomic activities, diplomats said. The U.N. International Atomic Energy Agency (IAEA) is tasked with checking that Iran is living up to its part of the agreement that took effect in January and was last month extended by four months until late November. Under the accord that was reached in late 2013 - meant to buy time for negotiations on a permanent settlement of the decade-old dispute - Iran halted its most sensitive nuclear work in exchange for some easing of sanctions. The initial aim was for Iran and the six powers - the United States, France, Russia, China, Britain and Germany - to reach a comprehensive agreement by a self-imposed July 20 deadline. But the talks and the preliminary deal were extended in view of still wide differences over the permissible future scope of Iran's uranium enrichment program, activity which can have both civilian and military purposes.