BEIJING (Reuters) - Russian Prime Minister Vladimir Putin warned major powers on Wednesday against intimidating Iran and said talk of sanctions against the Islamic Republic over its nuclear programme was "premature".

Putin, who many diplomats, analysts, and Russian citizens believe is still Russia's paramount leader despite stepping down as president last year, was speaking after U.S. Secretary of State Hillary Clinton visited Moscow for two days of talks.

"There is no need to frighten the Iranians," Putin told reporters in Beijing after a meeting of the Shanghai Cooperation Organisation.

"We need to look for a compromise. If a compromise is not found, and the discussions end in a fiasco, then we will see."

"And if now, before making any steps (towards holding talks) we start announcing some sanctions, then we won't be creating favourable conditions for them (talks) to end positively. This is why it is premature to talk about this now."

Clinton failed to secure any specific assurances from Russia on Iran during her visit, leaving her open to criticism at home that she had not received anything from Moscow after earlier U.S. concessions on missile defence.

"We are being guided by what the head of the American state is saying," Putin said. "He said there would be no anti-missile shield in Europe. We are satisfied by this statement, and to make assumptions what happens next is not quite right."

Moscow had opposed plans by previous U.S. President George W. Bush to deploy interceptor missiles in Poland and a radar in the Czech Republic, viewing this as a direct threat to Russia's national security.

Putin said however Moscow "feels no euphoria" about Bush's successor Barack Obama's promise to roll back the shield plans.

MOSCOW (AP) - A top Russian security official says Moscow reserves the right to conduct pre-emptive nuclear strikes to safeguard the country against aggression on both a large and a local scale, according to a newspaper interview published Wednesday.

Presidential Security Council chief Nikolai Patrushev also singled out the U.S. and NATO, saying Moscow's Cold War foes still pose potential threats to Russia despite what he called a global trend toward local conflicts.

Russia and the United States have tentatively agreed to a weapons inspection program that would allow Russians to visit nuclear sites in America to count missiles and warheads.

The plan, which Fox News has learned was agreed to in principle during negotiations, would constitute the most intrusive weapons inspection program the U.S. has ever accepted.

Foreign Minister Sergey Lavrov, who met with Secretary of State Hillary Clinton, said publicly Tuesday that the two nations have made "considerable" progress toward reaching agreement on a new strategic arms treaty.

The 1991 Strategic Arms Reduction Treaty, or START, expires in December and negotiators have been racing to reach agreement on a successor.

Clinton said the U.S. would be as transparent as possible.