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Clinton Says Iran Must Show Action On Nuke Program

U.S. Secretary of State Hillary Clinton says the world "will not wait indefinitely" for Iran to live up to its international obligations regarding its nuclear program.

Clinton said in London on Sunday that a recent meeting in Geneva that saw Iran and six world powers resume nuclear talks was "a constructive beginning, but it must be followed by action."

The U.S. and its allies fear Tehran wants to build an atomic bomb and is using what it calls a civilian nuclear energy program as cover. Iran is under U.N. penalties for refusing to stop enriching uranium, a key first step toward building a bomb.

Clinton is on a tour of Europe is due to meet British Prime Minister Gordon Brown before traveling to Ireland later Sunday.