Iranian President Mahmoud Ahmadinejad said Sunday the latest round of talks between Iran and world powers was "a step forward," state radio reported. The report also quoted the Iranian leader as saying his country's official assessment of the talks would soon be announced. He did not give a precise date. Ahmadinejad's remarks were his first after the meeting Saturday in Geneva between Iran's top nuclear negotiator and envoys from Washington and five other nations. The six countries have given Iran two weeks to respond to their demand that it freeze uranium enrichment, setting the stage for a new round of UN sanctions. Iran's refusal to consider suspending enrichment was an indirect slap at the United States, which had sent US Undersecretary of State William Burns to the talks in hopes the first-time American presence would encourage Teheran into making concessions.