Anthony Cordesman may be the most influential man in Washington that most people have never heard of. A former director of intelligence assessment for the secretary of defense and director of policy and planning in the Department of Energy, he is now the top strategic guru at the Center for Strategic & International Studies.

Most serious politicians and journalists have for some years based their analyses of the Iraq war and its aftermath on his universally respected research. Cordesman is a facts man who likes and reveres good data and cool, clinical analysis as the keystones of policymaking.

He has now turned his laser-like research and forensic intelligence skills to studying the real implication of the endless diplomatic minuet at the United Nations over Iran's nuclear ambitions. In the real world, this matters mainly because an Iranian nuclear capability would transform the power balance in the wider Middle East, and leave the region and the rest …