Iran is seeking changes to a UN-drafted nuclear plan to ship enriched uranium out of the country for final processing, Iranian State TV reported on Tuesday afternoon.
According to the report, Teheran opposes shipping its full stockpile of low-enriched uranium at once.
The demand for a step-by-step approach Tuesday comes as the world awaits Iran's decision on the plan, which seeks to ease Western worries about the country's ability to one day create nuclear weapons.
Iran has hinted it could agree to the basic structure of the plan and send some enriched uranium to Russia, but it has not given a final answer. The proposal was issued last week after talks with Russia, France and the United States in Vienna.
Iran is expected to respond on Friday.