NCRI - French Foreign Minister Bernard Kouchner said on Tuesday U.N. sanctions might have to be toughened against Iranian regime if Tehran continues to ignore demands to rein in its nuclear activities and negotiate.

Asked about Iranian regime's announcement that it had begun installing 6,000 new centrifuges at its uranium enrichment plant in Natanz French Foreign Minister told a news conference his reaction was one of "concern and vigilance", adding that attempts to create a dialogue with Tehran had failed so far.

"I fear that we will have to continue on the road toward sanctions if we don't get any response from the Iranians,'' he said.

The U.N. Security Council has passed three rounds of sanctions against Iranian regime for failing to heed demands that it suspend uranium enrichment, a process that can produce fuel for nuclear weapons.

Also on Thursday, Mrs. Maryam Rajavi, the President-elect of the Iranian Resistance, described Ahmadinejad's remarks on "starting to install 6,000 centrifuges" in Natanz as a clear indication of the clerical regime's accelerating drive to obtain the nuclear bomb. She urged the UN Security Council to adopt a firm policy and to impose comprehensive and immediate sanctions against the regime.

The President-elect of the Iranian Resistance reiterated that while the clerical regime was actively and with all available means violating the UN Security Council resolutions, the imposition of comprehensive military, technological, diplomatic, and oil sanctions by the UN Security Council is ever more imperative. Any delay or pinning hope on possible negotiations with the regime would only provide time to the mullahs who view obtaining nuclear weapons as a strategic guarantor of their survival and will not give it up under any circumstances.