The United States on Tuesday introduced a draft resolution at the UN to impose tough new sanctions on Iran, shaking off what it framed as an attempt by Tehran to stall efforts by signing up to a nuclear swap deal.

The draft resolution would expand an arms embargo and measures against Iran's banking sector and ban it from sensitive overseas activities like uranium mining and developing ballistic missiles, a US official said.

"The resolution would establish a comprehensive new framework for cargo inspections, both in states' ports and on the high seas," the official told journalists on condition of anonymity.

The draft, which was being debated by the 10 non-permanent members of the United Nations Security Council on Tuesday, had received the blessing of all the veto-wielding permanent members, including the usual standouts China and Russia, the US said.

"We have reached agreement on a strong draft with the cooperation of both Russia and China," US Secretary of State Hillary Clinton said.

"This announcement is as convincing an answer to the efforts undertaken in Tehran over the last few days as any we could provide," Clinton told the Senate Foreign Relations Committee.

She was referring to Monday's deal, brokered by emerging powers Brazil and Turkey, in which Tehran agreed to swap much of its stockpile of low enriched uranium (LEU) to Turkey in exchange for fuel for a research reactor.

Beijing's apparent backing of a fourth round of sanctions against Iran over its suspect nuclear activities came despite its earlier support for the swap deal.

"We attach importance to and support this agreement," Chinese foreign ministry spokesman Ma Zhaoxu said.

Western powers fear that Iran's atomic program is a cover for a nuclear weapons drive. Tehran denies this, saying the program is aimed at peaceful energy use, which it insists it has the right to pursue.

Clinton reiterated that Washington had raised "a number of unanswered questions" about the tripartite deal struck on Monday, but welcomed what she called the "sincere efforts of both Turkey and Brazil."

For Washington, the core issue was that Iran intended to continue enriching uranium.

Clinton said Washington and its partners "are proceeding to rally the international community on behalf of a strong sanctions resolution that will, in our view, send an unmistakable message about what is expected from Iran."

There was no immediate reaction from Tehran and it was unclear what effect the draft resolution would have on Monday's accord which commits Iran to deposit 1,200 kilograms (2,640 pounds) of LEU in Turkey in return for fuel for a Tehran research reactor.

Turkey and Brazil are both non-permanent members of the UN Security Council.

Turkish Prime Minister Recep Tayyip Erdogan urged the world community on Tuesday to support the deal, which his foreign minister, Ahmet Davutoglu, warned could be spoiled by talk of sanctions.

But French President Nicolas Sarkozy, whose country along with Britain rounds out the Security Council's permanent membership, said that while it was a "positive step," the deal must be accompanied by a halt of Iran's uranium enrichment.

Tehran said Tuesday that it expects a swift response from world powers on the accord, which a government-owned newspaper boasted had "checkmated" US efforts for new sanctions.

Iran would notify the International Atomic Energy Agency of the accord "in writing, through the usual channels, within a week," foreign ministry spokesman Ramin Mehmanparast said.

In October, the Vienna Group made an offer for Iran to ship most of its LEU out of the country in return for higher grade reactor fuel to be supplied by Russia and France.

Iran stalled on the deal, insisting it wanted a simultaneous swap on its own soil, a proposal world powers rejected.

Tehran, already under three sets of UN sanctions over its defiant nuclear drive, touted the agreement as a goodwill gesture that paves the way for a resumption of talks with world powers.

Iran's enemy Israel -- the Middle East's sole if undeclared nuclear-armed state -- is weighing a formal response to the deal, although a senior official accused Iran of trickery shortly after it was signed.

Monday's signing came after three-way talks in Tehran between Iranian President Mahmoud Ahmadinejad, his Brazilian counterpart Luiz Inacio Lula da Silva and Turkey's Erdogan.

earlier related report
French-Iranian prisoner swap?
Paris (UPI) May 18, 2010 - France Tuesday released from prison the killer of Iran's last prime minister, only two days after Iranian authorities freed a French teacher accused of spying, fueling speculation that both governments conducted a behind-the-scenes prisoner swap.

Clotilde Reiss, a 24-year-old teacher, was visibly moved when addressing reporters after her arrival in Paris Sunday.

"I am so happy to be back in my country, to be free and with my family again," said Reiss, who had spent the past nine months under arrest in Iran for espionage after the Iranian presidential elections last summer, a charge she and her government deny. On Saturday Iran changed her jail time into a fine, with Reiss leaving the country a day later.

After Reiss' safe return home, French authorities moved quickly: They agreed to the release of Ali Vakili Rad, who was jailed for life in 1994 for the assassination of Shahpour Bakhtiar, Iran's last prime minister under the shah before the Islamic revolution. Bakhtiar had fled Iran after the revolution and was living in France, when Vakili Rad and two unidentified individuals stabbed him to death in the French town of Suresnes in 1991.

French Interior Minister Brice Hortefeux signed an expulsion order Monday, and a Paris court agreed to Vakili Rad's early release after delaying a decision twice during the past year. Soon after his release, Vakili Rad boarded a plane to Tehran.

There, he will be welcomed with open arms: For his role in the killing of Bakhtiar, Iranian authorities consider him a hero of the Islamic Revolution.

Paris, Tehran as well as the lawyers involved deny that the releases are part of an unofficial prisoner swap. Only six months ago French President Nicolas Sarkozy had refused the call for such an exchange issued by his Iranian counterpart Mahmoud Ahmadinejad, vowing France would not be blackmailed.

In Iran, the press boasted about the releases.

"We will retain from this adventure the fact that Iran has superbly manipulated and defied the democratic world and France in particular," the Midi Libre newspaper wrote.

The French opposition said it has no doubt that a prisoner swap took place. It urged the government to increase transparency in its dealings with the rogue state.

"It would have been better if the government had been honest about this," Benoit Hamon, the Socialist party spokesman, was quoted by the London Times as saying.