Evidence-Graded Timeline · Nuclear Proliferation
How Dutch Centrifuge Designs Reached Pakistan and Iran
The A. Q. Khan affair was an industrial-security failure that moved URENCO knowledge from Amsterdam to Kahuta, then through a black-market network to Iran, Libya, and North Korea.
Cite this paper
Kessler, Nora. "How Dutch Centrifuge Designs Reached Pakistan and Iran." Zero Agenda News, May 19, 2026. https://zeroagendanews.com/papers/2026/05/netherlands-pakistan-iran-nuclear/.
Kessler, N. (2026, May 19). How Dutch Centrifuge Designs Reached Pakistan and Iran. Zero Agenda News. https://zeroagendanews.com/papers/2026/05/netherlands-pakistan-iran-nuclear/
@misc{zan2026howdutch,
author = {Nora Kessler},
title = {How Dutch Centrifuge Designs Reached Pakistan and Iran},
year = {2026},
publisher = {Zero Agenda News},
url = {https://zeroagendanews.com/papers/2026/05/netherlands-pakistan-iran-nuclear/}
}
Most reporting gives you conclusions without evidence, or evidence without structure. An evidence-graded timeline separates what is documented from what is inferred from what is argued — every entry carries a confidence label and cites its sources. You can read the conclusion and trust the label, or drill into every source yourself.
How this works →TL;DR
Between 1972 and 1975, Pakistani metallurgist A. Q. Khan gained access to URENCO centrifuge work through Dutch subcontractor FDO, left for Pakistan, and helped build the centrifuge base of Pakistan's nuclear weapons program.
The chain:
| Link | What moved | Result |
|---|---|---|
| Netherlands -> Pakistan | URENCO/FDO centrifuge knowledge and supplier contacts | Pakistan's P-1 centrifuge base |
| Pakistan -> Iran | Khan-network P-1 drawings, components, and know-how | Iran's first-generation centrifuge program |
| Pakistan -> Libya | Centrifuge components and weapons-design material | Network exposed after Libya interdiction |
| Pakistan -> North Korea | Reported centrifuge assistance linked to missile/nuclear barter | Terms remain partially contested |
What the evidence supports:
- Dutch firms and authorities failed to compartment sensitive centrifuge knowledge.
- Frits Veerman warned about Khan and was later found to have been disadvantaged after reporting suspected espionage.
- Ruud Lubbers' CIA-intervention claim is credible but remains a single-origin allegation.
- Iran's IR-1 lineage should be described as P-1/Khan-network derived, not as a direct untouched copy of Dutch drawings.
- Modern Dutch knowledge-security screening is a partial policy response to the kind of risk the Khan affair exposed.
Cast
- A. Q. Khan — Pakistani metallurgist (1936-2021); worked at FDO in the Netherlands and later led Pakistan's uranium-enrichment program.
- Frits Veerman — FDO technician and photographer (1944-2021); warned about Khan and was later recognised as having been disadvantaged after reporting suspected espionage.
- Ruud Lubbers — Dutch Minister of Economic Affairs during the Khan period; later prime minister; publicly alleged CIA pressure in the case.
- Zulfikar Ali Bhutto — Pakistan's prime minister during the formative phase of Pakistan's nuclear-weapons program.
- Pervez Musharraf — Pakistani president who pardoned Khan in 2004.
- FDO — Fysisch-Dynamisch Onderzoek, the Dutch subcontractor where Khan and Veerman worked.
- URENCO / UCN — European uranium-enrichment consortium and Dutch enrichment arm whose centrifuge knowledge was exposed.
- BVD / AIVD — Dutch domestic intelligence service, known as BVD during the Khan affair and later as AIVD.
Filter by confidence — Google · LinkedIn
Phase 1 · Dutch Access and Warnings (1972-1975)
Khan joins FDO and visits UCN's Almelo enrichment site¶
A. Q. Khan begins work at FDO, a Dutch subcontractor for Ultra-Centrifuge Nederland, part of URENCO. Within a week, he visits the UCN enrichment facility at Almelo. The Carnegie chronology records that Dutch intelligence began monitoring him soon afterward because he was asking technical questions outside his assigned projects.
Carnegie Endowment for International Peace · International Institute for Strategic Studies
India's nuclear test accelerates Pakistan's weapons drive¶
India conducts its first nuclear explosive test, "Smiling Buddha." Pakistan's political leadership treats the test as confirmation that it must match India's capability. Khan writes to Pakistani Prime Minister Zulfikar Ali Bhutto later that year offering assistance.
Carnegie Endowment for International Peace · Atomic Heritage Foundation
Khan gains access to advanced URENCO centrifuge documents¶
Khan receives access to classified German-language centrifuge material connected to URENCO's G-1 and G-2 work, ostensibly for translation and technical purposes. This access gives him design knowledge and supplier information that later prove central to Pakistan's enrichment program.
Carnegie Endowment for International Peace · International Institute for Strategic Studies
Frits Veerman reports suspected espionage¶
FDO colleague Frits Veerman reports concerns that Khan is copying and moving sensitive centrifuge information. Later accounts by the Dutch whistleblower authority and related reporting state that Veerman was told to keep quiet, lost his job, and spent decades seeking recognition for his warning.
International Panel on Fissile Materials · Huis voor Klokkenluiders
Dutch authorities move Khan away from sensitive work¶
Dutch concerns rise, and Khan is moved away from sensitive work. The response is administrative rather than prosecutorial: no public arrest or prosecution occurs before he leaves the country.
Khan leaves the Netherlands for Pakistan¶
Khan leaves the Netherlands for Pakistan with centrifuge knowledge and supplier contacts. Later accounts describe the supplier list as a major accelerator for Pakistan's ability to procure centrifuge components through European firms.
Carnegie Endowment for International Peace · International Institute for Strategic Studies
Phase 2 · Pakistan Builds the P-1 Program (1976-1985)
Bhutto places Khan in charge of Pakistan's enrichment route¶
Khan becomes central to Pakistan's uranium-enrichment effort at what becomes Khan Research Laboratories in Kahuta. His program draws on the centrifuge knowledge and supplier network accumulated during and after his Dutch employment.
Carnegie Endowment for International Peace · International Institute for Strategic Studies
Pakistan enriches uranium with P-1 centrifuges¶
Pakistan's P-1 centrifuge work succeeds at Kahuta. The P-1 lineage is widely described as derived from the early URENCO/G-1 design path that Khan encountered in the Netherlands.
Carnegie Endowment for International Peace · International Institute for Strategic Studies
Dutch court convicts Khan in absentia¶
A Dutch court convicts Khan in absentia for nuclear espionage and sentences him to four years. By then he is in Pakistan and beyond Dutch custody.
Khan's Dutch conviction is overturned¶
Khan's conviction is overturned on procedural grounds related to service of the summons. The reversal does not establish innocence; it leaves the Dutch legal case unresolved while Pakistan's enrichment program continues.
Phase 3 · Khan Network Proliferation (1987-2004)
Khan network supplies Iran with P-1 centrifuge material¶
Iran obtains centrifuge-related assistance through the Khan network. Arms Control Association and IranWatch summaries of IAEA reporting describe 1987 transfers of P-1 drawings, components, and know-how as the starting point of Iran's centrifuge program.
Iran receives additional P-1 and P-2 centrifuge assistance¶
Iran receives additional centrifuge assistance through the Khan network in the mid-1990s. IranWatch describes later transfers as including more complete P-1 and P-2 designs and components, while IAEA reporting linked contamination findings to imported centrifuge components.
Network expands beyond Iran to Libya and North Korea¶
The Khan network expands from procurement for Pakistan into onward proliferation. Libya receives centrifuge components and weapons-design material. North Korea is reported to have received centrifuge assistance, but specific barter terms with missile technology remain partially contested.
International Institute for Strategic Studies · Arms Control Association · Institute for Science and International Security
Pakistan tests nuclear weapons¶
Pakistan conducts nuclear weapons tests at Chagai after India's 1998 tests. Khan becomes a public symbol of Pakistan's uranium-enrichment route to the bomb.
BBC China interdiction exposes the network¶
The German-owned ship BBC China is diverted while carrying centrifuge components bound for Libya. The shipment, manufactured in Malaysia and routed through Dubai, helps expose the operating structure of the Khan black-market network.
Libya renounces WMD and turns over Khan-network evidence¶
Libya agrees to abandon its weapons of mass destruction programs and provides physical evidence of Khan-network procurement. The disclosures connect supplier nodes in Europe, Malaysia, Dubai, Pakistan, and Libya.
Arms Control Association · Institute for Science and International Security
Khan confesses on Pakistani television¶
Khan publicly accepts responsibility for proliferation activity involving Iran, Libya, and North Korea. The confession frames the network as a personal enterprise, while later analyses dispute whether Pakistani state actors were as disconnected from the network as Islamabad claimed.
Carnegie Endowment for International Peace · Arms Control Association
President Musharraf pardons Khan¶
Pakistani President Pervez Musharraf pardons Khan one day after the televised confession. Khan remains under restrictions in Pakistan, but no foreign prosecution proceeds.
Carnegie Endowment for International Peace · Arms Control Association
Phase 4 · Aftermath and Policy Response (2009-2025)
Lubbers alleges CIA pressure in the Dutch handling of Khan¶
Former Dutch Prime Minister Ruud Lubbers says U.S. intelligence asked Dutch authorities not to arrest Khan so he could be monitored. The claim is reported by multiple outlets, but it remains an allegation rooted in Lubbers' account; no declassified U.S. document confirms it.
Islamabad High Court frees Khan from house arrest¶
The Islamabad High Court ends Khan's formal house arrest. He continues living in Pakistan and remains beyond the reach of foreign courts.
Frits Veerman dies after decades seeking recognition¶
Veerman dies in 2021. The Dutch whistleblower authority's later commemorative materials describe how a 2020 report found that Veerman was disadvantaged after reporting suspected espionage at FDO.
International Panel on Fissile Materials · Huis voor Klokkenluiders
A. Q. Khan dies in Islamabad¶
Khan dies in Islamabad at age 85 and receives a state funeral. His death closes the life of the central figure in the URENCO-to-Pakistan proliferation story, but not the policy consequences of the network he built.
Netherlands publishes Knowledge Security Screening Bill for consultation¶
The Dutch government announces that researchers and master's students who want to work with sensitive knowledge will soon need government screening under the Knowledge Security Screening Bill. The measure applies to universities, universities of applied sciences, and research institutes such as TNO.
Government of the Netherlands · Government of the Netherlands
Interpretation
Who was responsible
The failure was institutional rather than a deliberate Dutch state decision to arm Pakistan. FDO and URENCO failed at compartmenting sensitive work, Dutch intelligence and ministries acted slowly, and the commercial and diplomatic environment discouraged a public confrontation before Khan left. That distinction matters: the evidence supports negligence, weak security, and possible foreign pressure; it does not support intentional Dutch nuclear assistance.
The American role
Lubbers' allegation, if true, means the United States treated Dutch sovereignty as subordinate to a wider Cold War intelligence objective. Because the claim still lacks declassified U.S. confirmation, it belongs in conjecture, not fact. The structural point remains: small allied states need procedures that prevent foreign intelligence preferences from quietly overriding domestic criminal cases.
The lineage problem
The paper's core lineage is strong when phrased precisely. Dutch centrifuge knowledge helped Pakistan build the P-1 route. The Khan network then supplied P-1 designs, components, and related know-how to Iran. Calling Iran's IR-1 a direct untouched copy of Dutch drawings is too compressed; calling it a descendant of the URENCO-to-Pakistan P-1 lineage is the defensible claim.
Recommendations
Accelerate Dutch knowledge-security screening.
The Knowledge Security Screening Bill is a direct response to the class of risk the Khan affair exposed: sensitive technical knowledge leaving through trusted research and engineering channels. Screening should cover both universities and industrial research subcontractors.
Extend screening to subcontractors and small private labs.
FDO was a subcontractor, not URENCO itself. The next comparable leak is more likely to pass through a small supplier or research partner than through a highly visible national champion.
Protect technical whistleblowers by default.
Veerman's case shows the cost of treating internal warnings as reputational threats. Sensitive sectors should have protected escalation channels, mandatory response deadlines, and compensation when a whistleblower is penalised for a substantiated report.
Modernise export controls for digital technical artefacts.
Khan moved drawings and supplier knowledge. Current equivalents include CAD files, process recipes, simulation models, biological sequence data, and model weights. Export-control practice should treat such artefacts as movable goods.
Pre-position prosecutorial authority for active counter-proliferation cases.
Administrative reassignment is not enough when a suspected actor may leave the jurisdiction. Prosecutors need fast evidence-preservation powers, travel-risk controls, and mutual legal-assistance channels before a suspect exits.
Sources
- A. Q. Khan Nuclear Chronology — Carnegie Endowment for International Peace (2005-09)
- A.Q. Khan and Onward Proliferation from Pakistan — International Institute for Strategic Studies (2007)
- The death of Frits Veerman - not the end of the Khan Affair — International Panel on Fissile Materials (2021-03)
- Veermanlezing 2025 — Huis voor Klokkenluiders (2025-06)
- CIA asked us to let nuclear spy go, Ruud Lubbers claims — GlobalSecurity.org (2005-08)
- Dutch let Khan go at CIA's request — Dawn (2005-08)
- A.Q. Khan profile — Atomic Heritage Foundation
- Turning a Blind Eye Again? The Khan Network's History and Lessons for U.S. Policy — Arms Control Association (2005-03)
- Beyond the IR-1: Iran's Advanced Centrifuges and their Lasting Implications — Iran Watch (2021-01)
- IAEA Criticizes Iran Cooperation — Arms Control Association (2005-04)
- Uncovering the Nuclear Black Market — Institute for Science and International Security
- Nuclear Scientist A.Q. Khan Is Freed From House Arrest — Washington Post (2009-02)
- Father of Pakistan's nuclear programme A.Q. Khan dies — Al Jazeera (2021-10-10)
- Screening for researchers wising to handle sensitive knowledge — Government of the Netherlands (2025-04)
- Knowledge Security — Government of the Netherlands
Methodology
This document uses the Evidence-Graded Timeline (EGT) format v1.0. Fact requires corroboration from two or more independent credible sources, or direct support from an official or primary record whose existence and contents are the claim. Conjecture covers single-origin, contested, or inferred claims, including Lubbers' CIA-intervention allegation. Opinion is confined to the interpretation and recommendations sections.