Pakistan’s nuclear weapons stockpile now includes an estimated 70-90 nuclear warheads, according to the latest Nuclear Notebook published in the Bulletin of the Atomic Scientists. The estimate is an increase compared with the previous estimate of approximately 60 warheads due to Pakistan’s pending introduction of a new ballistic missile and cruise missiles.
The increase in the warhead estimate does not mean Pakistan is thought to be sprinting ahead of India, which is also increasing its stockpile.
The nuclear-capable Shaheen-II medium-range ballistic missile appears to be approaching operational deployment after long preparation. The Army test-launched two missiles within three days in April 2008, and the U.S. Air Force National Air and Space Intelligence Center (NASIC) reported in June 2009 that the weapon “probably will soon be deployed.”
Two types of nuclear-capable cruise missiles are also under development; the ground-launched Barbur and the air-launched Ra-ad. The development of cruise missiles with nuclear capability is interesting because it suggests that Pakistan’s nuclear weapons designers have been successful in building smaller and lighter plutonium warheads.
An article published in the July issue of the CTC Sentinel news letter of the Combating Terrorism Center at the U.S. Military Academy at West Point gained widespread attention for describing terrorist attacks against three of Pakistan’s rumored nuclear weapons facilities: Wah Ordnance Facility, Kamra Air Base, and Sargodha Weapons Storage Facility. Although the incidents had been reported before, the article triggered the predictable rejection from a Pakistani military spokesman but with the additional claim that neither facility stored nuclear weapons. “These are nowhere close to any nuclear facility,” he said. Yet the official would most likely not disclose the location of the nuclear weapons, even if he knew where they were.
While the CTC Sentinel article says “most” of Pakistan’s nuclear sites might be close to or even within terrorist dominated areas, senior U.S. officials said the weapons were secure and mostly located south of Islamabad.
Regardless of the actual location of the weapons, there have, of course, been many more terrorists attacks against other facilities that have nothing to do with Pakistan’s nuclear weapons program, and so far no pattern has emerged in public of a concerted terrorist effort against nuclear sites – much less an attempt to steel nuclear weapons. A U.S. intelligence official commented to the New York Times that it was unclear whether the attackers knew what the facilities contained. “If they were after something specific, or were truly seeking entry, you’d think they might use a different tactic, one that’s been employed elsewhere – such as a bomb followed by a small-arms assault.”
Pakistani and U.S. statements about the Pakistani nuclear arsenal, and the basis for our estimate, are included in the Nuclear Notebook.
Publication: Pakistani Nuclear Forces, 2009