President Bush has called for a diplomatic solution to the Iran nuclear crisis.
At the White House on Friday, Mr. Bush said Iran must not be allowed to posses a nuclear weapon, saying this would pose a grave threat to the security of the world.
He said it is logical that a country that has rejected diplomatic options be referred to the United Nations Security Council. Mr. Bush made those comments after talks with German Chancellor Angela Merkel.
Iran has threatened to end cooperation with the United Nations nuclear agency if Tehran's nuclear program is referred to the Security Council for possible sanctions. Iran said earlier this week it was resuming nuclear fuel research.
China's U.N. ambassador, Wang Guangya, said referring the matter to the United Nations might complicate the issue. Russia has urged Iran to resume its moratorium on nuclear activities and cooperate with the U.N. nuclear agency.
Iran says its nuclear program is for peaceful purposes.