Abstract: In this age of increasing "Global Transparency," commercial satellite imagery has now made it possible for anyone to remotely peer "over the fence" and view what heretofore had been otherwise impossible...clandestine nuclear facilities (most significantly, those capable of producing fissile material suitable for use in nuclear weapons). The synergistic combination of readily available tools: personal computers, the internet, three-dimensional virtual globe visualization applications such as Google Earth, and high resolution commercial satellite imagery has gone beyond what anyone could have imaged just a few years ago. The downside of all this is that those who want to keep their clandestine nuclear facilities and associated activities from being either detected, identified, and/or monitored, are becoming more adept in their use of camouflage, concealment, and deception.

Iran is one such case where it has followed a steep learning curve of adapting to the threat that overhead observation can pose. After repeated dissident group revelations about Iran's clandestine nuclear facilities, together with confirming media broadcast of commercial satellite images of those facilities followed by verification inspections by the International Atomic Energy Agency (IAEA); the government of Iran has become increasingly aware of this threat and gone to greater and greater lengths to try and defeat it. Iran's cover-up tactics have improved with time...from concealed infrastructure and false cover stories (Natanz)...to refurbishment and sanitization of facilities following removal of incriminating equipment (Kalaye Electric and Lashkar Abad), to the wholesale razing of facilities together with the removal of dirt and vegetation to defeat IAEA forensic environmental sampling (Lavizan).

While the international community continues to debate the issue of whether or not Iran's nuclear program is purely peaceful in nature (helping it to stay an "open case"), Iran is defiantly pursuing its goal of fissile material production. Syria, on the other hand (evidently together with North Korea), was also quite aware of the overhead observation threat, taking great pains to conceal its plutonium production reactor at Al-Kibar. Syria disguised the true function of the facility by employing minimal site security (no fences or guard towers), having minimal support infrastructure (with non visible powerlines and only buried water lines), not installing a telltale reactor ventilation stack or cooling tower, hiding the reactor building in a ravine (terrain masking), and finally camouflaging the facility with a false façade to make it appear as a byzantine fortress. Nonetheless, despite all those steps, a leak of ground-level reactor construction and interior photographs, which formed the basis for the subsequent bombing of the facility by Israel, successfully thwarted that effort (the "closed case?"). Rather than confessing the truth about al-Kibar, the Syrian government rushed to remove all traces of the destroyed reactor and supplant it with a new larger footprint building for as yet unknown purposes while continuing to claim it was previously only a disused military warehouse. The IAEA asked d Syria for permission to inspect not only the Al-Kibar site, but reportedly up to three other sites thought to be associated with it. The Syrians refused access to all but the now heavily sanitized Al-Kibar location. We must now all await the IAEA report on the findings of that singular onsite inspection.

Frank Pabian is a Senior Nonproliferation Infrastructure Analyst at Los Alamos National Laboratory who has over 35 years experience in the nuclear nonproliferation field including six years with the Office of Imagery Analysis and 18 years with Lawrence Livermore National Laboratory's "Z" Division.  Frank also served as a Chief Inspector for the IAEA during UN inspections in Iraq from 1996-1998 focusing on "Capable Sites." In December 2002, Frank served as one of the first US nuclear inspectors back in Iraq with UN/IAEA. While at Los Alamos, Frank has developed and presented commercial satellite imagery based briefings on foreign clandestine nuclear facilities to the International Nuclear Suppliers Group, the IAEA, NATO, and the Foreign Ministries of China and India on behalf of the NNSA and STATE.

Ariel (Eli) Levite is a nonresident senior associate in the Nonproliferation Program at the Carnegie Endowment. He is a member of the Israeli Inter-Ministerial Steering Committee on Arms Control and Regional Security and a member of the board of directors of the Fisher Brothers Institute for Air and Space Strategic Studies. Prior to joining the Carnegie Endowment, Levite was the Principal Deputy Director General for Policy at the Israeli Atomic Energy Commission. Levite also served as the deputy national security advisor for defense policy and was head of the Bureau of International Security and Arms Control in the Israeli Ministry of Defense. In September 2000, Levite took a two year sabbatical from the Israeli civil service to work as a visiting fellow and project co-leader of the "Discriminate Force" Project as the Center for International Security and Cooperation (CISAC) at Stanford University. Before his government service, Levite worked for five years as a senior research associate and head of the project on Israeli security at the Jaffee Center for Strategic Studies at Tel Aviv University. Levite has taught courses on security studies and political science at Tel Aviv University, Cornell University, and the University of California, Davis.

Steven Kull, director of WorldPublicOpinion.org and the Program on International Policy Attitudes (PIPA). He directs the PIPA/Knowledge Networks poll of the US public, plays a central role in the BBC World Service Poll of global opinion and the polls of the Chicago Council on Global Affairs, and is the principal investigator of a major study of social support of anti-American terrorist groups in Islamic countries. He regularly appears in the US and international media, providing analysis of public opinion, and gives briefings to the US Congress, the State Department, NATO, the United Nations and the European Commission. His articles have appeared in Political Science Quarterly, Foreign Policy, Public Opinion Quarterly, Harpers, The Washington Post and other publications. His most recent book, co-authored with I.M. Destler, is Misreading the Public: The Myth of a New Isolationism (Brookings). He is a faculty member of the School of Public Policy at the University of Maryland and a member of the Council on Foreign Relations and the World Association of Public Opinion Research.