VIENNA/UNITED NATIONS, March 2: UN investigators want Iran to explain an organisational chart linking projects to process uranium, test explosives and modify a missile cone for a nuclear payload, diplomats briefed on the matter say.

They said a top UN nuclear watchdog official last week gave a detailed presentation of intelligence alleging illicit atomic “weaponisation studies” by Iran and naming the man who ran them for the Ministry of Defence and Armed Forces Logistics.

In a written summary of the presentation, they said Iran had refused to let inspectors interview Mohsen Fakrizadeh or visit sites where the experiments took place.

The summary also confirmed leaks that the briefing for the first time indicated Iran continued the three projects into 2004, calling into question a US intelligence estimate in December that said Iran shelved weaponisation research in 2003.

“This presentation was a graphic demonstration that ...amplifies the concerns we’ve had for a number for years. And we are waiting for answers,” Simon Smith, British ambassador to the IAEA, told reporters after the Feb-25 briefing.

The disclosures came as the US and key European allies were piling pressure on four developing nations on the UN Security Council to vote for sanctions against Iran on Monday. Iran says its nuclear ambitions are limited to the peaceful generation of electricity. But Iran’s enrichment could be turned to fuelling atom bombs as well as power plants and it hid the programme from the UN non-proliferation watchdog until 2003 after exposure by exiled Iranian dissidents.

The IAEA says it remains to be seen whether the new intelligence details are correct, but is demanding a full response from Iran, not just denials lacking evidence.—Reuters