Group of Eight foreign ministers will meet in New York to review the Iranian nuclear issue on September 24, Italian Foreign Minister Franco Frattini announced in Rome Wednesday.
The meeting would take place on the sidelines of the United Nations General Assembly, Frattini told reporters.
At last week's summit of the world's richest nations in L'Aquila in Italy, President Barack Obama warned that the international community would not wait "indefinitely" for a response to its offer of dialogue with Iran on the nuclear issue.
And he said leaders would re-evaluate the "Iranian position" in September.
The G8 joint declaration expressed "serious concern" over post-election violence in Iran but called for a negotiated resolution to the standoff over Tehran's nuclear programme, giving it until September's G20 summit.
"That's been always our premise… that we provide that door," said Obama
"But we also say we're not going to just wait indefinitely and allow for the development of the nuclear weapon, the breach of international treaties, and wake up one day and find ourselves in a much worse situation and unable to act," he said.
Iran's defiant plan to continue enriching uranium lies at the heart of the controversy over Tehran's nuclear ambitions.
Highly enriched uranium can be used to make atomic weapons, but low enriched uranium is used in nuclear power plants. Tehran denies it wants to make atomic weapons and insists its nuclear programme is aimed solely at generating electricity.
A meeting of G20 leaders was due to be held at Pittsburgh, Pennsylvania, on September 24-25.
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