BEIRUT — Iran failed to resolve lingering questions about alleged nuclear weapons research and modestly expanded its ability to produce sensitive radioactive material that could potentially be used for a bomb, says a report issued Monday by the U.N.'s atomic watchdog for its board of directors.
Still, Iran is less than a third the way to producing enough nuclear material for a single atomic weapon unless it drastically expands its program, nuclear experts have said.
The dryly worded six-page report by the International Atomic Energy Agency, or IAEA, contains few of the words of praise for Iran's cooperation with nuclear inspectors included in previous assessments, a sign of the agency's growing frustration at what its officials have privately called Tehran's intransigence.
"We would describe it as a gridlock," said a senior United Nations official, who spoke to reporters on condition of anonymity. "Iran so far has not been forthcoming in replying to our questions. We seem to be at a dead end there."
The report also contains a surprise reference to evidence of "foreign expertise" assisting in Iran's past nuclear efforts. The senior U.N. official declined to disclose details about the nature of the help, but it said it came from outside the secret nuclear sales network of Pakistani scientist Abdul Qadeer Khan and that the danger of freelance nuclear guns for hire was "serious enough to pursue it with Iran."
The report will be taken up by the IAEA board of governors at a meeting in Vienna next week. It may provide ammunition for Western and Israeli officials seeking to impose a fourth round of U.N. Security Council sanctions on Iran over its refusal to stop enriching uranium. However, some analysts predict it won't be enough to overcome the reluctance of Russia and China, which wield veto power on the council, to impose harsh measures against Iran any time soon.
"It was always going to be difficult to get another round of sanctions," said Peter Crail, a nonproliferation analyst at the Arms Control Assn., a Washington think tank. "And I don't think there's going to be nearly enough in this report to get them before next year."
Washington quickly praised the assessment, which covered Iran's nuclear activities since May. The U.S. envoy to the IAEA accused Iran of failing to come clean with inspectors and defying the international community.
