Russian Foreign Minister Sergei Lavrov warned the US and Israel against an attack on Iran, cautioning that such a move would mean "a very serious mistake".
Such an attack "could bring very unpredictable results ... military intervention only creates a great number of victims," Lavrov said, speaking at a Moscow press conference to the Interfax news agency.
An Israeli attack against Iran "is not impossible", Lavrov added.
Lavrov called for a diplomatic settlement of problems.
"Our suggestions (for the settlement of the West-Iran nuclear standoff) are still on the negotiating table, and I hope that no one will do anything that would destroy chances - voluntarily or by accident - of a negotiated solution," he said.
Russia has recently introduced a step-by-step proposal for the resolution of the nuclear strife between Tehran and the West.
Iran says its nuclear program is a peaceful drive to produce electricity so that the world's fourth-largest crude exporter can sell more of its oil and gas abroad. Tehran also stresses that the country is pursuing a civilian path to provide power to the growing number of Iranian population, whose fossil fuel would eventually run dry.
The US and its western allies allege that Iran is pursuing a nuclear weapons program while they have never presented corroborative evidence to substantiate their allegations against the Islamic Republic.
Iran is under four rounds of UN Security Council sanctions for turning down West's calls to give up its right of uranium enrichment, saying the demand is politically tainted and illogical.
Iran has so far ruled out halting or limiting its nuclear work in exchange for trade and other incentives, saying that renouncing its rights under the NPT would encourage the world powers to put further pressure on the country and would not lead to a change in the West's hardline stance on Tehran.
Source: FARS News Agency, 23 November 2011