French Foreign Minister Philippe Douste-Blazy urged the international community on Wednesday to present a united front in confronting Iranian efforts to develop nuclear weapons.

French Foreign Minister Philippe Douste Blazy speaks during a visit to the Soroka Hospital in the southern Israeli city of Beer Sheva May 17, 2006. [Reuters]

During a visit to Israel, Douste-Blazy said Iran's nuclear program caused a "serious crisis" and the U.N. Security Council may have to impose sanctions on Iran if it does not halt the enrichment of uranium.

"We are currently operating with two key words: unity and determination of the international community," Douste-Blazy said at a hospital in southern Israel. "Nothing is worse that not having the international community united on this subject."

The foreign minister spoke in French, and his remarks were translated into Hebrew.

Iran's president, Mahmoud Ahmadinejad, said Wednesday that Iran would not accept "any suspension or end" to its uranium enrichment activities.