Ali Ashgar Soltanieh, Iran's chief representative to the IAEA, again reiterated his country's refusal to suspend uranium enrichment, a key Western demand in nuclear negotiations.

The United States is seeking fresh sanctions against Iran over fears Tehran is seeking to develop atomic weapons. The UN Security Council has already imposed two rounds of sanctions on Iran to persude it to give up its uranium enrihment activities.

On June 13, U.S. Undersecretary of State Nicholas Burns warned that Iran could face new sanctions as soon as "the next week or two" unless it comes to the negotiating table on its nuclear program.

Burns said Iran has made a major miscalculation if it believes it has any support internationally for its actions.

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