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The Spy Who Sold Nuclear Secrets to Iran | Cargo of Doom | 3

May 12, 2026 • 37m

Summary

⏱️ 8 min read

Overview

This episode chronicles how UN weapons inspector Olli Heyonen's 2003 discovery of Iran's advanced nuclear facility exposed Dr. A.Q. Khan's global proliferation network. The CIA and MI6 launched an intensive operation to dismantle Khan's black market, recruiting the Tinner family as moles, intercepting shipments to Libya, and ultimately pressuring Pakistan to arrest their national hero. The episode details the sophisticated intelligence operation that tracked nuclear components across continents and forced Libya to abandon its weapons program while revealing the terrifying scope of Khan's sales to Iran, North Korea, Libya, and an unknown fourth customer.

Iran's Secret Nuclear Facility Discovery

In February 2003, UN weapons inspector Olli Heyonen arrives at Iran's Natanz facility following intelligence tips and discovers a vast underground enrichment operation with over 160 centrifuges already spinning, with capacity for a thousand more. The centrifuge designs match Pakistan's Urenco models from the 1970s, directly implicating Dr. A.Q. Khan as the supplier. This discovery reveals that Khan's proliferation network is far more advanced than Western intelligence previously understood, and they've arrived a decade too late to prevent significant progress.

  • UN inspector discovers Iran has advanced centrifuge facility at Natanz with anti-aircraft defenses
  • Over 160 centrifuges already operational with space for 1,000 more, showing massive scale
  • Centrifuge design matches Pakistan's Urenco P1 model, directly linking to A.Q. Khan
  • Discovery means Iran's nuclear program is a decade ahead of Western intelligence estimates
" This means Iran is getting help from Pakistan. But Pakistan is a US ally in the war on terror. So if its government isn't behind this, someone with deep knowledge of Pakistan's nuclear weapons program is. "

MI6 and CIA Unite Against Khan

With the 2003 Iraq invasion underway and Gaddafi seeking rapprochement with the West, MI6 establishes secret communications with Libya while the CIA prepares to move decisively against Khan's network. Intelligence agencies who had disagreed for years about timing finally coordinate their efforts. They recognize Khan is preparing a major shipment to Libya and recruit the entire Tinner family as paid informants, offering them one million dollars to reveal everything about Khan's operation and allow searches of their Swiss properties.

  • Libya's Gaddafi reaches out to MI6 seeking to avoid Iraq's fate as US invasion begins
  • CIA and MI6 overcome years of disagreement to coordinate takedown of Khan network
  • UN inspectors find direct links between Khan and Iran's nuclear program
  • CIA offers Tinner family $1 million for complete cooperation and access to records
" We knew Khan's network had two centrifuge designs in circulation, P1 and P2. But there's a third, more advanced model we didn't know about. So Iran could be closer to a nuclear bomb than we think? "
" Khan's got a fourth customer we don't know about. "

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