Russian warned Israel not to attack Iran over its nuclear program, saying on Wednesday that military action would have catastrophic consequences.
"Of course any possible military scenario against Iran will be catastrophic for the region and for the whole system of international relations," Deputy Foreign Minister Gennady Gatilov said.
Therefore I hope Israel understands all these consequences ... and they should also consider the consequences of such action for themselves," Gatilov said at a news conference..
A top UN nuclear official said on Wednesday his team could "could not find a way forward" in attempts to persuade Iran to talk about suspected secret work on atomic arms.
Herman Nackaerts of the International Atomic Energy Agency says the talks in Tehran were inconclusive, although his mission approached the talks "in a constructive spirit."
Nackaerts spoke to reporters at Vienna airport shortly after returning from the Iranian capital.
An IAEA statement published overnight already acknowledged the talks had failed.
Iran denies it has experimented with nuclear arms programs but has refused to cooperate with an IAEA probe on the issue for nearly four years.