By using Fredrik Dahl VIENNA (Reuters) – Via shedding prior calls for that Iran shut down an underground uranium enrichment plant and ship subject material in a foreign country as a part of a preliminary deal, nuclear negotiators have kicked one of the most hardest questions ahead to talks for the next 12 months. The curbs to its nuclear application that Iran agreed to on Sunday are easier to reverse than measures that had been up to now known as for by using the six global powers looking for to prevent Tehran from growing an atomic bomb, specialists say. However supporters say the compromise was important to halt Iran’s nuclear advances in order that the true bargaining may commence, and must assist preserve both sides concerned with the ultimate negotiations which lie ahead. A senior Western diplomat mentioned that Iran may resume its most controversial task – production of 20 % enriched uranium – if it will have to make a decision to desert the deal or if final talks fail.