ALGIERS (Agencies) - Iran is open to all "constructive and reasonable" negotiations on its nuclear program but will not accept any preconditions, its main nuclear negotiator, Ali Larijani, said Tuesday.

Larijani, speaking in Algiers, again rejected the offer made by European and U.S. authorities to open talks leading to an incentive package in exchange for a suspension of uranium enrichment activities.

"The issue of uranium enrichment constitutes a major part of those negotiations, so if this part was eliminated then the negotiations would be stripped of all meaning," he said as carried by AFP.

Iran however accepted "all constructive and reasonable negotiations (without) any preconditions", he added.

Larijani arrived in Algiers Monday from Cairo where he had stressed that Tehran would not accept any "threats" from the West over the nuclear issue.

The five permanent UN Security Council members -- the United States, Britain, France, Russia and China -- and Germany last week offered Iran a nuclear offer which its contents have not yet been made public.

Algeria, where Larijani met with President Abdelaziz Bouteflika, is a member of the Non-Aligned Movement, which is preparing to issue a statement that could back Iran in the nuclear standoff with the West.

Sixteen of the 40 countries in the NAM are represented on the 35-member board of governors of the UN's nuclear watchdog, the International Atomic Energy Agency. According to the official Chinese Xinhua news agency, Larijani stressed that the Arab world back Iran in the international scene, saying, “All states in the Arab world are on the side of Iran.”

-------------------Iran, Algeria should establish strategic ties Larijani, who chairs Iran’s Supreme National Security Council, said that given the common interests, Iran and Algeria should embark on establishing strategic ties. Speaking to IRNA, he added that two nations’ officials have the resolve to carry out the issue which should manifest itself in political, economic and cultural areas. Fortunately in international issues there is a good cooperation between the two nations and they have had effective cooperation. The two nations have ample potentials for reaching higher investments and trade volume, he added. "The bulk of my talks with Algerian president and foreign minister focused on the issue of expansion of mutual trade." He also expressed hope that positive step will be taken in this regard in the near future. Larijani who returned home on Tuesday told reporters at the Mehrabad airport that Algeria is a "friend" of Iran. On Sunday, in Cairo, Larijani met with Egyptian President Hosni Mubarak, Foreign Minister Ahmed Aboul Gheit and Arab League Secretary General Amr Moussa during which he outlined Iran's principled stance on peaceful nuclear activities.