In an interview with The Guardian, Rasoul Movahedian said the package would "deal with all aspects of our relationship (with the international community)" but he was not permitted to give further details "before the end of next week".

The newspaper said Mohavedian had told them the initiative would cover the nuclear programme, security of energy supplies in the Middle East, counter-terrorism and joint efforts to control the drugs trade.

The ambassador also repeated his government's assertion that it would not give up the right to enrich uranium, as the UN Security Council has demanded.

"My government is going to continue along the enrichment path. We do not accept any preconditions for negotiations," he was quoted as saying.

The five permanent members of the UN Security Council plus Germany met in London last Friday and put forward a "reviewed and updated" offer initially made to Iran in 2006, including economic, security and technological rewards.

No details of the so-called P5 plus one's plans have yet been made public, although Russia has said that the proposals only ask Iran to suspend uranium enrichment during a period of talks.

Western powers fear Iran's nuclear programme is a front for developing atomic weapons. Iran says it is for domestic, energy purposes only.

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