In 2014:
Fact Sheet
The Possible Military Dimensions of Iran’s
Nuclear Program
The United States and a number of other countries have provided evidence to the International Atomic Energy Agency (IAEA) that Iran secretly sought to develop the materials and technology to produce nuclear weapons over the past several decades. There is substantial evidence that Iran acquired expertise, information and technology from the nuclear black market run out of Pakistan by nuclear scientist A.Q. Khan. The IAEA is trying to determine whether this evidence is accurate and how far Iran has progressed in developing nuclear weapons. There is no evidence that Iran has or has ever built a nuclear weapon or that it has enough nuclear material to do so now. The IAEA’s investigation is based on information provided by other countries and its own work. This information suggests that Iran has previously pursued development of a nuclear implosion device, a design similar to that used in the arsenals of most nuclear weapon states. (See figure one below.)
An implosion device – in simplistic terms – involves compressing a sphere of uranium or plutonium into a smaller but symmetrical sphere through the use of shaped explosive lenses.
The concept is similar to trying to compress a soccer ball into a baseball with dynamite. Each step in designing, testing, producing and delivering this kind of device requires highly specialized materials, equipment and expertise. Over the past decade, the IAEA has investigated the extent to which Tehran has pursued, developed and perfected many of the steps associated with the production of such a device.
Figure 1. Implosion Weapon Design Concept
Source: 2011 Nuclear Weapons Handbook, DOD
The bulk of what the IAEA has learned is referred to by the Agency as the “possible military dimension” of Iran’s nuclear program. A detailed summary of the issues being assessed by the IAEA was reported by IAEA Director General Yukia Amano to the IAEA Board of Governors in November 20111 and is summarized below.
The Joint Plan of Action and the IAEA
The political negotiations taking place between Iran on the one hand and the United States, Russia, China, France, the United Kingdom, Germany (known as the P-5+1) and the European Union on the other seek to negotiate a comprehensive agreement that will limit Iran’s nuclear program while enabling it to enjoy the peaceful benefits of nuclear technology. To do so, Iran must enable full and effective safeguards as implemented by the IAEA. To date, the Agency has reported that Iran is in full compliance with its obligations for special monitoring under the terms of the Joint Plan of Action (JPOA).
Iran has, however, been found in non-compliance with its safeguard agreement obligations2 required under the terms of the Nuclear Nonproliferation Treaty. For over a decade, the IAEA has been seeking to clarify a number of outstanding issues related to Iran’s past nuclear activities, catalogued below. It remains unclear whether a comprehensive settlement of the remaining issues with Iran can be achieved without Iran also satisfying all of the IAEA’s outstanding concerns about its nuclear past. At the very least, states will continue to have 1 IAEA Report, “Implementation of the NPT Safeguards Agreement and relevant provisions of Security Council resolutions in the Islamic Republic of Iran,” November 8, 2011 doubts about Iran’s peaceful intentions as long as the IAEA is not satisfied that its investigations are complete.
http://www.iaea.org/Publications/Documents/Board/2011/gov2011-65.pdf
2 September 24, 2005 IAEA Board of Governors Resolution GOV/2005/77
http://www.iaea.org/Publications/Documents/Board/2005/gov2005-77.pdf
The JPOA agreed to by Iran and the P-5+1 on November 24, 2013 states that a “Joint Commission of E3/EU+3 and Iran will be established to monitor the implementation of the nearterm measures [under the JPOA] and address issues that may arise, with the IAEA responsible for verification of nuclear-related measures. The Joint Commission will work with the IAEA to facilitate resolution of past and present issues of concern.” However, the State Department has recently clarified that the issue of past weapon-related activities is a matter for the IAEA to investigate and is not a matter for the special commission3.
IAEA and Iranian officials have continued to meet since the JPOA was completed and implemented. As yet, these discussions have not resolve the issues listed below. At some point the IAEA will likely be asked to judge whether its concerns have been addressed, and how any remaining unresolved issues might affect the IAEA’s ability to carry out its inspection mandate to verify that Iran’s nuclear activities are of an exclusively peaceful nature.
Possible Military Dimensions of Iran’s Nuclear Program
Much of the evidence that Iran pursued a secret nuclear weapons development program comes from the United States and other IAEA member states. IAEA reports indicate that at least ten member states have provided evidence to the IAEA related to Iran’s past nuclear activities. In addition, IAEA documents suggest that some of the evidence about Iran’s past activities come from interviews with Pakistani sources, including possibly A.Q. Khan. None of the publicly available evidence in and of itself proves that Iran had a nuclear weapon program. It is also not clear that Iran has continued any of these activities, and it is not publicly known how far this alleged work progressed before it was reportedly stopped in 20034.
Procurement Activities
The IAEA has evidence that from the 1980s until the early 2000s, Iran acquired nuclear expertise and related materials outside of normal procurement channels, including through a black market network run by A. Q. Khan. Iranian officials claim they were forced to seek nuclear items on the black market because it was blocked from pursuing “legitimate” nuclear efforts by the United States and other western powers. However, the fact that much of the procurement efforts were run by military organizations, including the Ministry of Defense, has suggests that the nuclear efforts being pursued by Iran were military in nature. Moreover, the links between procurement and other military application programs, including ballistic missile programs, undermines but does not disprove Iran’s argument that its program is entirely 3 February 17, 2014 Background Briefing, Senior Administration Official, Vienna, Austria peaceful. The IAEA continues to try to understand the full nature of Iran’s procurement activities.
http://iipdigital.usembassy.gov/st/english/texttrans/2014/02/20140218293187.html#axzz2tmkRefbb
4 “Iran: Nuclear Intentions and Capabilities”, National Intelligence Estimate, National Intelligence Council,
November 2007,
http://www.dni.gov/files/documents/Newsroom/Reports%20and%20Pubs/20071203_release.pdf
Nuclear Material Acquisition Activities
The IAEA has evidence that during the 1990s and early 2000s, Iran pursued the development of clandestine nuclear facilities for the processing and enrichment of uranium. The Natanz and Fordow uranium enrichment sites were only declared after they were uncovered by western intelligence or outside sources. Iran also had an active program to acquire uranium outside of IAEA safeguards, for possible use in these previously clandestine facilities. The IAEA has evidence that Iran planned to secretly acquire and enrich uranium at non-declared nuclear facilities and this evidence remains under investigation by the IAEA.
Detonator Development
The IAEA has evidence that Iran pursued studies and received documentation for the development of fast-functioning devices known as “exploding bridgewire detonators.” These devices have limited uses outside of detonating explosive charges associated with nuclear weapons. Iran acknowledges that it has developed EBW for civilian and conventional military applications, but has not explained to the IAEA what these applications are. As such, the IAEA continues to consider this effort a “matter of concern.” Moreover, as noted below, the IAEA has information that Iran has considered the reliability of EBW in the possible testing of nuclear weapons.
Nuclear Components for an Explosive Device
Key to the IAEA’s investigation is a document reportedly provided to Iran by the Pakistani black marketers related to the conversion of uranium into metallic form and the shaping of uranium metal into hemispheres. It also appears likely that Iran acquired designs for nuclear weapons, as did other customers of the Pakistani network, including Libya. The IAEA also has evidence that Iran did work preparing to produce components for such a device. This matter remains of high interest to the IAEA.
Initiation of High Explosives
IAEA member states have provided information that Iran had access to information about multipoint initiation systems. Such systems are necessary for the operation of an implosion device, such as the one Iran may have pursued. Iran has acknowledged access to the information, but claims the document was “not understandable” to their experts and has not conducted activities referred to in the information. This stance is contradicted by information provide to the IAEA by member states and appears to be related to a possible experiment carried out by Iran in 20035.
5 Joby Warrick, “Russian scientist Vyacheslav Danilenko’s aid to Iran offers peek at nuclear program” The
Washington Post November 13, 2011 http://www.washingtonpost.com/world/national-security/russianHydrodynamic
Experiments
Hydrodynamic experiments are full-scale model tests of nuclear implosion devices that substitute non-fissile materials to uranium or plutonium. Member states have provided information to the IAEA indicating Iran has manufactured “simulated nuclear explosive components using high density materials” – presumably to simulate uranium metal. This, together with Iran’s activities related to the use of high-speed diagnostic equipment, including flash x-ray technology, raise concerns about nuclear weapons-related work.
This area of investigation has spawned one of the most contentious6 areas of the IAEA’s work – that related to the facility at Parchin. The IAEA has received information from member states that Iran acquired information about, and may have built, a large explosives containment vessel in which to conduct hydrodynamic experiments. There is some evidence that Iran built and installed such a device at Parchin. Two visits to Parchin by the IAEA in 2005 failed to identify this site, but not all facilities were visited by the Agency at the time. Iran has since made large scale changes to the site, a move that could be related to concealment efforts of its past activities.
Aside from site access, Iran has yet to fully explain or effectively refute the evidence that has been made available to the IAEA on this matter and it remains of concern to the IAEA. The Agency states that it has had direct access to the source of some of this expertise for Iran, believed to be a former Soviet weapons-scientist7.
Neutron Initiation
Iran may, according to evidence provided to the IAEA, have undertaken work to build neutron initiators for use in nuclear weapons. In an implosion device, a small source of additional neutrons can be inserted inside the sphere to be compressed, releasing a boost of neutrons at the exact moment of implosion. This can help ensure that fission takes place and also increase the yield of a nuclear device.
Modeling and Calculations
The design of nuclear weapons can be achieved by using advanced calculations and computerbased modeling. Iran has reportedly sought access to calculation and nuclear modeling training.
The IAEA has evidence that representatives from Iran “met with officials from an institute in a nuclear-weapon state to request training courses in the fields of neutron cross section calculations using computer codes.” Such models can be used in civil as well military nuclear applications. Iran has denied these allegations in writing to the IAEA.
scientist-vyacheslav-danilenkos-aid-to-iran-offers-peek-at-nuclearprogram/
2011/11/12/gIQAeuiCJN_story.html
6 http://www.sipri.org/media/expert-comments/the-iaea-and-parchin-do-the-claims-add-up
7 Ibid
Nuclear Test Planning
Iran may have made plans to test a nuclear device. There is evidence that Iran may have “conducted a number of practical tests to see whether its EBW firing equipment could function” over long distances between a firing point and a deep test shaft – commonly used in underground nuclear tests. The IAEA has also received documents from member states in Farsi discussing possible logistics associated with such a test.
Work to Modify a Missile Payload Area
The IAEA has information that Iran conducted engineering studies on how to integrate a “new spherical payload into the existing payload chamber which would be mounted in the re-entry vehicle of the Shahab-3 missile.” The Shahab-3 missile is an Iranian version of the North Korean No-Dong system with a reported range of almost 1,300 kilometers or 800 miles. The work allegedly includes the production of component prototypes as well as modeling work on at least 14 different progressive design iterations. Iran has told the IAEA it believes the information it has received are forgeries, but the IAEA has stated the “quantity of the documentation, and the scope and contents of the work covered in the documentation, are sufficiently comprehensive and complex that in the Agency’s view, it is not likely to have been the result of forgery or fabrication.”
Fusing, Arming and Firing
The alleged studies and documents noted above also indicate that Iran pursued design work on developing a prototype firing system to enable both air and ground detonation of the payload.
Iran dismissed the information as an “animation game.” The Agency has worked with member state experts to determine that the most likely application of the designed air burst system would be for a nuclear system and that the alternative possible use (for chemical weapons-use) could be ruled out.
Taken together, this information and analysis does not prove that Iran had a nuclear weapon program. However, US and other foreign officials are convinced of Iran’s past illegal activities.
Regardless, if a final comprehensive settlement is to be reached, Iran and the IAEA will have to find a politically acceptable way to resolve the outstanding matters under investigation.
Iran Fact File is a project of the James Martin Center for Nonproliferation Studies.
© 2014 Iran Fact File
All rights reserved.
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IAEA Director General to Punt the Iran PMD Issue to the Board of Governors
Have you seen this new Bloomberg article by Jonathan Tirone? I’m almost dumbstruck by it. In it he reports:
Investigators probing Iran will let national officials from places including the U.S., China and Russia decide if the Persian Gulf country hid a nuclear weapons program, according to two officials familiar with their work.
The International Atomic Energy Agency’s inspection team will likely have to make an assessment based on incomplete information and let its board of nationally-appointed governors draw definitive conclusion about the country’s past nuclear work, said the two senior international officials, who asked not to be named because the information isn’t public. . .
It isn’t realistic to expect the IAEA to provide a black-and-white assessment showing that Iran either did or did not have a nuclear-weapons program, the officials said. The IAEA will set a time to end the investigation and submit its findings to the 35-member board of governors to make a ruling, they said.
I almost don’t know where to begin on this. As readers will know, I’ve long been critical of the IAEA’s decision to investigate allegations, mostly originating from third party states, of past possible military dimensions (PMD) to Iran’s nuclear program, and the November 2011 IAEA DG report that most comprehensively laid out these allegations. I published this commentary on the report the day after it was sent to the BOG. Since then I’ve written on the issue several times, including here, and have tried to explain that the IAEA has absolutely no mandate or authority to investigate and assess whether safeguarded states have done research and development work on nuclear weaponization not involving fissile materials.
Notwithstanding this lack of legal authority and, as Bob Kelley and Tariq Rauf point out in their new article in Arms Control Today, a lack of technical expertise to assess nuclear weaponization R&D as well, the IAEA has proceeded over the past three years to gather what information they could about the PMD claims, and has tried to engage Iran on this issue, with little success.
It’s never been clear to me what DG Amano’s game plan was on the PMD issue – i.e. how he thought the investigation would realistically play out, and what he thought would be achieved through it. Again, there is no legal source that lays out the IAEA’s authority and tools for investigating nuclear weaponization, so there are no standards for the agency to follow.
It now appears that the final chapter of the IAEA’s PMD inquiry in Iran will consist of the IAEA DG’s office handing over whatever technical information they have, however incomplete, to the national political representatives who constitute the 35 member Board of Governors of the IAEA, and asking them to determine whether Iran worked on nuclear weaponization in the past.
If that sounds kind of crazy to you, then you’re not alone.
Again, I don’t think the IAEA should have ever started down the path of investigation and assessment on this issue, but given that they have, surely it must be recognized that this is essentially a technical matter – i.e. whether there is sufficient evidence of a nuclear weaponization program in Iran in the past. It is not a political matter. How, then, are the political representative of 35 countries on the IAEA BOG qualified in any way to make this determination?
This seems to me to be a complete cop-out – a surrender by the IAEA DG’s office. Whether it’s a surrender to facts (i.e. the DG’s office doesn’t have, and knows it never will have, enough information to really make the call technically, and is afraid to admit it) or a surrender to politics (i.e. the US and others are pressuring Amano to get the PMD issue resolved, and this is the only way to face-savingly do it) or more likely a combination of both, this can’t be the way Amano hoped this PMD inquiry would be resolved. Although, again, I don’t know what his plan was to begin with.
This is a punt – a buck passing, plain and simple. And even though the IAEA should never have gotten involved in this issue in the first place, this sets a very bad precedent for the agency going forward. The IAEA DG’s office is basically admitting that they cannot do their job of making a technical determination here, and they are instead punting the issue over to the BOG for a politicized vote. What does that say to IAEA member states about the IAEA’s ability to objectively apply technical safeguards to their nuclear programs, and about the independence and apolitical nature of the agency?
If this vote does indeed go ahead in the IAEA BOG, no matter what the outcome I think it will be one of the darkest days in the agency’s history. And I think that DG Amano is solely responsible for the black eye the agency’s reputation will take from this ill conceived, and badly executed foray into weaponization investigation.
