SINGAPORE, November 15 (RIA Novosti) - Russian President Dmitry Medvedev said on Sunday that Russia and the United States could use 'other means' if the talks on Iran's controversial nuclear program yielded no results.

"The aim of the negotiation process with Iran is to secure clear-cut guarantees from Tehran on the transparency of its nuclear program that does not cause concern of the international community," Medvedev said after his talks with U.S. President Barack Obama on the sidelines of the Asia Pacific Economic Cooperation forum in Singapore.

Medvedev said that if that plan failed, "other options remain on the table, in order to move the process in a different direction." He did not specify, however, what these options might be.

Tehran has rejected Western suspicions that it secretly plans to build nuclear weapons and insists on its right to nuclear technology for electricity generation.

Russia has consistently supported Iran's right to peaceful nuclear energy, and has almost completed the country's first nuclear power plant in Bushehr.