
In a blow to Iran, the board of the U.N. nuclear agency on Friday overwhelmingly backed a demand from the U.S., Russia, China and three other powers that Tehran immediately stop building its newly revealed nuclear facility and freeze uranium enrichment.
Iranian officials shrugged off approval of the resolution by 25 members of the 35-nation board of the International Atomic Energy Agency. But the U.S. and its allies hinted of new U.N. sanctions if Tehran remains defiant.
The West said some time remained for Tehran to come around and accept a specific offer that would delay its ability to make a nuclear weapon as well as engage in broader talks with the ultimate goal of persuading it to mothball its enrichment program.
But that window of opportunity would not stay open indefinitely, officials said.
"The next stage will have to be sanctions if Iran doesn't respond to what is a very clear vote from the world community," British Prime Minister Gordon Brown said.
German Foreign Minister Guido Westerwelle said the resolution's passage shows that "the international community still wants dialogue with Iran, but time is pressing."
"Our hand is still held out," he added. "I hope Iran will take it. Iran must know: our patience is not infinite."
White House Press Secretary Robert Gibbs avoided mentioning sanctions — but indicated harsher measures were possible unless Iran compromised.
"Our patience and that of the international community is limited, and time is running out," he said in a statement. "If Iran refuses to meet its obligations, then it will be responsible for its own growing isolation and the consequences."
Iran argues that its nuclear program is aimed at creating a peaceful nuclear energy network to serve its growing population. The U.S. and other nations believe Iran's nuclear program has the goal of creating atomic weapons.
The IAEA resolution criticized Iran for defying a U.N. Security Council ban on uranium enrichment — the source of both nuclear fuel and the fissile core of warheads.