Iran's Foreign Ministry Spokesman Ramin Mehman-Parast said Sunday that the failure of 5+1 meeting on Iran's sanctions was only "natural", the official IRNA news agency reported.

With talk of sanctions, the world powers, five permanent members of the UN Security Council plus Germany (5+1), ended a meeting on Saturday in New York with no clear agreement over the Iranian nuclear issue.

After a two-and-a-half-hour meeting, Russian Deputy Foreign Minister Sergei Ryabkov said the meeting was "inconclusive in a sense that we didn't make any decisions right away" but added that most of the discussions focused on the "second track", meaning sanctions.

The 5+1 programs and talks over Iran's nuclear program are doomed to failure as long as they fail to adopt a realistic approach towards the issue by endorsing Iran's rights to peaceful nuclear technology, Mehman-Parast told IRNA.

The failure of talks like the one which concluded last night was due to the fact that it was politically motivated talks, he added.

The West accuses Iran of covertly building nuclear weapons but Tehran maintains that its nuclear program is intended to generate electricity for its population.