Articles

Weapons of mass destruction (WMDs) are not suitable for the Iranian Army, given its non-mechanized nature; its defensive military posture; its current status as a non-nuclear weapon state; and its sufficient conventional preparation to meet its protective security interests. This paper proposes three interlinked policy approaches to resolve the current impasse.

Through structured interviews and a literature review, we assess which approaches to protection against insider thefts in the casino and pharmaceutical industries could be usefully applied to strengthen protections against insider theft in the nuclear industry, where insider thefts could have very high consequences.

Hui Zhang re-examines the North Korean explosion on October 9, 2006. His research suggests that the test was likely not a failure if Pyongyang had planned for a yield of 4 kt, as it told Beijing prior to the event.

Article in The Nonproliferation Review

Hui Zhang provides a path-breaking technical assessment of the Korean nuclear test, publishing a comment (with co-authors Jungmin Kang and Frank von Hippel) on the test and the limits of nuclear forensics in Arms Control Today.

"...[T]here are plenty of laws that require or authorize sanctions against governments that knowingly provide direct support to proliferators. But these laws offer little protection against those governments that—through neglect, corruption, or incompetence—fail to keep the materials and technology needed to make nuclear, biological, and chemical weapons from slipping out of their control and across their borders."

Pakistan's security environment has deteriorated through its adoption of a declared nuclear weapons posture in May 1998. Internal fissures have widened along regional and sectarian lines as the Pakistani economy falters, unable to sustain even limited external sanctions following decades of internal mismanagement. Tensions with India have also increased as Pakistan's security managers adopt interventionist policies, based on a misplaced belief in the deterrent value of nuclear weapons. The international community, in particular, the USA's failure to reverse South Asian nuclear proliferation, has emboldened Indian advocates of nuclear deployment. If India deploys nuclear weapons and their delivery systems, Pakistan will follow suit. Operation-ready nuclear weapons will increase the prospects of an India - Pakistan conflict that could assume a nuclear dimension. Pakistan's nuclear weapons capability will not prevent an Indian conventional attack nor will the presence of nuclear weapons deter an Indian accidental, unauthorised or preventive nuclear attack. Changed domestic and external priorities alone can buttress Pakistani security.

The operation of dedicated plutonium-production reactors and large gaseous-diffusion uranium-enrichment plants (GDPs), can be detected remotely using commercial observation-satellite imagery. Declassified Corona imagery is used to demonstrate that the new generation of commercial observation satellites with 1-meter spatial resolution will be able to detect vapor plumes inside and downwind from large operating natural-draft cooling towers. Low-resolution Landsat-5 thermal infrared images have been shown by other authors to be able to detect warm water discharges from reactors into lakes, rivers, etc. Here, the same systems are shown to be able detect the elevated temperature of the roofs of large operating GDPs. Commercial-satellite observations could therefore play an important role in increasing confidence in declarations that plutonium-production reactors and GDPs have been shut down as a result of a fissile material-production moratorium or Fissile Material Cutoff Treaty.