Russia and China have urged Iran to accept a UN nuclear fuel proposal aimed at easing concerns about its atomic program, while U.S., British, and French envoys have said it is time for new sanctions. The statements by the five permanent, veto-wielding UN Security Council members highlighted the different views dividing the United States, Britain and France from Russia and China as they struggle to agree on what should be done to persuade Iran to halt its nuclear-enrichment program. Russia and China, which have reluctantly supported three rounds of UN sanctions against the Islamic Republic, renewed their calls for diplomacy and dialogue. - Reuters