Iran must take urgent action to allay mounting international concerns over its nuclear drive, E.U. foreign affairs chief Catherine Ashton said Thursday, September 27, after talks among the major powers, Agence France Presse reported. Ashton, who engages with Iran on behalf of the international powers, said she updated the foreign ministers of Britain, China, France, Germany, Russia and United States on her talks with Iran’s chief negotiator Saeed Jalili in Istanbul last week. France’s Foreign Minister Laurent Fabius said the meeting had been short because the major powers were united in the Iran crisis. The six powers decided to lay the groundwork for another round of negotiations with Iran over its nuclear program, a senior U.S. official said, but they want a significantly improved offer from the Islamic republic. Still, no date was set for the possible resumption of the so-called P5+1 talks with Iran, said the official.