"We have no reason to cede on 20 percent, because we produce only as much of the 20 percent fuel as we need. No more, no less," Fereydoon Abbasi Davani was quoted as saying late Saturday by the ISNA and Mehr news agencies.
The issue of Iran’s enrichment of uranium to 20 percent, and its stockpile of that uranium, were at the centre of talks on Wednesday and Thursday in Baghdad between Iran and six world powers (Britain, China, France, Russia and the United States plus Germany).
Those talks neared collapse when the powers, known as the P5+1, demanded Iran give up that activity and its stockpile in exchange for some inducements such as aircraft parts for its dilapidated commercial fleet and technical assistance in nuclear energy.
Iran, which is suffering under Western sanctions, said the inducements were far too little and countered with a demand that the P5+1 declare that it has a right to enrich uranium.
With that impasse, which Abbasi Davani termed "predictable," the talks teetered on failure and were saved only by last-minute wrangling that agreed to give negotiations another shot in Moscow on June 18-19.
Abbasi Davani was quoted as saying that Iran had now joined the small group of countries "that can produce fuel for others."
He added: "It is better that others engage us about providing (them) with fuel, not that they (the West) demand we shut down our fuel production."
According to the latest report by the International Atomic Energy Agency, Tehran has produced 145.6 kilogrammes of 20-percent enriched uranium, of which nearly a third has been converted into fuel for its research reactor.