The A. Q. Khan network is exposed

Background

American concern over Pakistan's nuclear programme had shaped relations since the 1970s. In late 2003, after Libya agreed to give up its weapons programmes, investigators traced much of the equipment Libya had acquired to a black-market network run by A. Q. Khan, the metallurgist who had built Pakistan's uranium-enrichment capability. The network had also supplied Iran and North Korea and involved suppliers and middlemen in several countries, including Malaysia, the Gulf, South Africa and Europe^1,3.

What happened

On 4 February 2004 Khan appeared on Pakistani state television and, speaking in English, acknowledged that he had transferred nuclear technology abroad, described it as an error of judgement and asked for forgiveness; he said the government had not been involved^1,2. On 5 February President Musharraf pardoned him, while placing him under what amounted to house arrest^2,4.

A week later, in a speech at the National Defense University in Washington on 11 February, President Bush set out publicly how the network had operated and how US and British intelligence had tracked it, and announced proposals to tighten controls on proliferation⁵. Washington did not penalise Pakistan: it publicly accepted Musharraf's assurances that the network had been shut down, while Pakistan declined to allow US investigators direct access to Khan³.

Why it mattered

The revelations were the most serious proliferation scandal of the nuclear age and confirmed long-standing American fears about the security of Pakistan's programme. Yet the response showed how far the post-9/11 partnership had changed priorities: rather than sanctions, the administration chose cooperation with Musharraf, who was by then indispensable in Afghanistan. Indian and some American commentators criticised the leniency; in Pakistan, Khan remained a popular hero, and many believed he had been made a scapegoat.

Legacy

Khan's freedom of movement was gradually restored, and he died in 2021. Pakistan subsequently strengthened its export-control laws and its nuclear command arrangements, and the security of its arsenal remained a recurring topic in US–Pakistan dialogue.