Iran's apparent willingness to prove it is not seeking nuclear weapons shows that the internationalsecurity system can function effectively. Encouraged by the United States, the International Atomic EnergyAgency (IAEA) has relentlessly investigated Iran's suspicious nuclear activities. After initial inquiriesyielded inconclusive results, the governors of the IAEA imposed a firm deadline for Iran to clarify pastactions, allow unfettered future inspections, and suspend work related to producing bomb-quality materials.Faced with potential pariahdom and sanction, Iranian leaders sought a deal. British, French, and Germanofficials then stepped in as Good Cops, insisting that Iran come clean and straighten up, promising benefitsif it does. The Bush Administration played the vital role of Bad Cop, looming in the background - almosthoping that Iran would be defiant so the US could punish it.