A letter to President Mohammad Khatami, signed by 175 deputies in the 290-seat Majlis, called on the government "to apply the law passed by parliament and approved by the Guardians Council as quickly as possible."

They said a promise by Britain, France and Germany to present new proposals to Iran on solving the nuclear stand-off in the coming months was a "victory" for the regime, but added that the EU-3 could also "waste more time by making an inacceptable proposition."

Last week the Guardians Council, a hardline political watchdog, said it approved of a law that obliges the government to "guarantee" production of the country's own nuclear fuel.

The bill, entitled "acquiring nuclear technology for peaceful purposes", was passed in May by right-wingers seeking to send a defiant message in the face of international demands that Iran abandon sensitive nuclear activities.

Although it will put Iran's claim to nuclear technology into law, the bill does not fix a deadline for an end to Iran's suspension of nuclear work.

Iran insists its bid to master the full nuclear fuel cycle, including uranium enrichment, is aimed at generating electricity and is a right for any country that has signed the nuclear Non-Proliferation Treaty.

But the process can also be used for military purposes.

The foreign ministers of Britain, France and Germany agreed with Iranian negotiators last month that they would make new proposals to Tehran in late July or August on cooperation in civilian nuclear power and trade ties.

Iran in turn pledged to maintain a suspension of its uranium enrichment programme agreed in Paris last November.

All rights reserved. � 2005 Agence France-Presse. Sections of the information displayed on this page (dispatches, photographs, logos) are protected by intellectual property rights owned by Agence France-Presse. As a consequence, you may not copy, reproduce, modify, transmit, publish, display or in any way commercially exploit any of the content of this section without the prior written consent of Agence France-Presse.