More negotiations are the only solution to Iran's decade-long nuclear standoff with the West, President Hassan Rouhani said Tuesday. The five permanent members of the UN Security Council -- Britain, China, France, Russia and the US -- plus Germany, want to render Iran incapable of developing an atomic ******* capability. In exchange, Iran wants painful sanctions choking its eco**my lifted, with negotiators insisting they also seek to preserve what Tehran calls its right to a civilian atomic programme. On Sunday, influential Iranian MP Aladin Borujerdi also welcomed the four-month extension, saying it showed all sides "have the will to reach a comprehensive agreement." The main sticking point in the negotiations is believed to be Iran's insistence on developing a uranium enrichment capacity that is far higher than what the West regards as acceptable.