Project - 706
In December 1974, however, the course of the Pakistani bomb drastically changed with the return of German-trained metallurgist Abdul Qadeer Khan, more commonly known as A. Q. Khan. He had spent the previous four years working for URENCO, a nuclear fuel company, on uranium enrichment plants in the Netherlands and brought his vast knowledge of gas centrifuges to Pakistan.
Although he was never officially head of Pakistan’s nuclear program, Khan played a vital role in its success. In 1976, he was put in charge of the Engineering Research Laboratories in Kahuta, which was later named the Khan Research Laboratories (KRL).
The site of a uranium enrichment plant, KRL offered Pakistan a second path to the bomb via highly enriched uranium (HEU) rather than plutonium. Khan’s laboratory was mostly autonomous from PAEC and the uranium bomb project even had a special codename: Project-706.
Although Project-706 began under Prime Minister Zulfikar Ali Bhutto, his influence over the project was short-lived. In 1977, General Muhammad Zia ul-Haq took power in a coup d’état and hanged Bhutto in 1979. The military took control of the nuclear program and it remains under military control today despite Pakistan later returning to a civilian government.
In 1979, the Soviet invasion of Afghanistan had a significant impact for Pakistan. Under President Ronald Reagan, the United States gave military support to the Afghan mujahideen to fight the Soviet Union. Pakistan—a neighbor of Afghanistan with crucial supply routes—proved to be an essential ally in this effort. As a result, the United States largely turned a blind eye to the Pakistani nuclear program.
In 1982, for example, Zia made an official visit to the United States. “He’s a good man,” wrote Reagan in his diary. “Gave me his word they were not building an atomic or nuclear bomb. He’s dedicated to helping the Afghans & stopping the Soviets” (Reed and Stillman 249).
In 1985, the U.S. Congress passed the Pressler Amendment, which established a protocol for sanctions against Pakistan if it crossed certain “red lines,” such as manufacturing highly enriched uranium and making a fissionable bomb core
. The law was designed to allow the United States to maintain good relations with Pakistan, but it ultimately forced the American government to implement sanctions in the 1990s.
Beginning in the early 1980s, Pakistan conducted a series of “cold tests,” which involved a nuclear device without fissile materials. It conducted over 20 additional cold tests during the next decade. Pakistan also strengthened its alliance with China against India. Among other assistance to Pakistan’s nuclear program, the Chinese government invited Pakistani scientists to Beijing.
On May 26, 1990, China tested a Pakistani bomb (Pak-1) on Pakistan’s behalf at the Lop Nur test site. The so-called “Event No. 35” was most likely a uranium implosion bomb, a derivative of the Chinese CHIC-4 design. Pakistan also reached an agreement with North Korea for Nodong ballistic missiles in exchange for Pakistani uranium enrichment technology.