French Foreign Minister Laurent Fabius says nuclear talks between Iran and world powers in Geneva have ended with no deal.
Fabius told reporters there are still some questions left unanswered and that the negotiations -- which continued until after midnight Saturday -- will resume at a later date.
The minister said earlier that Paris is not satisfied with Iran's position and will not be part of what he called a "fool's deal."
Fabius told French radio that Iran must suspend work on its plutonium-producing reactor in the western city of Arak. He also called for a reduction in the purity of Iran's stockpile of highly enriched uranium.
The talks in Geneva between Iran and the five permanent members of the U.N. Security Council plus Germany are aimed at persuading Iran to suspend work that could give it the capacity to develop nuclear weapons. In exchange, the U.N would ease some of its crippling sanctions against Iran.
The United States and its allies accuse Iran of seeking to build a nuclear bomb. Iran insists its nuclear program is strictly for peaceful civilian use.