Tehran has not stopped its uranium enrichment activities, Russian Foreign Ministry spokesman Andrei Nesterenko said on Thursday, RIA Novosti reported.
"The situation surrounding Iran's nuclear program is well known. Tehran continues enriching uranium, including to a 20-percent level," Nesterenko
said.
Questions also remained over Tehran's implementation of the relevant UN Security Council resolutions, he added.
The spokesman reiterated Russia's support for the efforts of the International Atomic Energy Agency (IAEA) to clarify all aspects of Iran's nuclear program and ensure its full cooperation on the remaining questions.
Under a uranium swap deal signed by Brazil, Turkey and Iran on May 17, Iran will swap in Turkey 1.2 tons of low-enriched uranium for 120 kg of
20-percent enriched uranium fuel.
The deal did not halt discussions of the world powers, including Russia, the United States, China, Britain, France and Germany, on a draft Security
Council resolution to expand sanctions against Iran over its nuclear program.
International pressure on Iran increased in early February when Tehran announced it had begun enriching uranium to 20 percent in lieu of an
agreement on an exchange that would provide it with fuel for a research reactor.