Iran's top nuclear negotiator warned Friday that a compromise over its controversial nuclear program was impossible if the West continued to demand Tehran suspend uranium enrichment, Iran's state broadcasting company reported on its Web site. Ali Larijani's comments came a day after the US and France took Iran to task during a conference on nuclear proliferation for defying a UN Security Council demand that it freeze enrichment. "If the West again applies the past wordings about Iran's nuclear case, this issue will not conclude," the Web site quoted Larijani as saying. "They should abandon this idea that they can change conditions of Iran's nuclear case by applying harsh word policy." The US and some of its allies have accused Iran of secretly developing nuclear weapons and have demanded the country suspend its enrichment activities prior to any negotiations.