France accuses Iran of not fully cooperating with the UN nuclear watchdog, once again calling on Tehran to suspend its disputed nuclear work.

"Iran must respond to requests from the IAEA to prove that their nuclear program is not military. They have not done that yet," French Foreign Minister Bernard Kouchner said in an interview with Le Figaro on Monday.

Kouchner said it was 'suspicious' that Iran did not respond to the International Atomic Energy Agency requests, insisting that it was 'essential' for Iran to abandon its nuclear work.

While the US, Israel and their European allies accuse Iran of having plans to develop a military nuclear program, the IAEA confirmed -- for the sixteenth consecutive time - in its latest report the "non-diversion" of declared nuclear material in the Islamic Republic.

The IAEA report said that "21 unannounced inspections" at Iranian nuclear sites have shown that Iran has enriched almost 1,010 kilograms of uranium-235 to a level of "less than 5 percent". Nuclear arms production requires an enrichment level of above 90 percent.

In the report, the IAEA also asked Iran to implement the Additional Protocol and further "transparency measures", which are voluntary procedures that involve providing a broader declaration of nuclear activities and giving the agency wider access to atomic sites.

Iran, a signatory to the nuclear Non-Proliferation Treaty (NPT), says a broader access would expose sensitive information related to its conventional military and missile related activities, insisting that any government would be reluctant to accept such a protocol because of national security concerns.

Iran, however, says it has provided the IAEA inspectors with full access to its nuclear facilities and has answered all questions remaining over its nuclear work.

When asked about the US offer of talks with Iran, Kouchner said France supports 'dialogue' with Tehran but went on to add that 'all avenues of diplomacy have been exhausted' regarding Tehran's nuclear dispute.

US President Barack Obama has vowed to diplomatically engage Iran in order to resolve the country's nuclear issue.

Iran has welcomed the prospect of talks but says it will not accept preconditions such as the suspension of nuclear work.