Arms control and nonproliferation treaties are among the fingers in the dike preventing the unthinkable nuclear, biological, and chemical catastrophe. For decades the ability to ascertain whether states are hiding germ weapons programs has been nonexistent because the 1975 bioweapons ban has no inspection measures. Yet, in 1995 a small United Nations inspection corps pulled off a spectacular verification feat in the face of concerted resistance from Iraq's Saddam Hussein and popular skepticism that it was even possible to conduct effective biological inspections. Working from sketchy...

Arms control and nonproliferation treaties are among the fingers in the dike preventing the unthinkable nuclear, biological, and chemical catastrophe. For decades the ability to ascertain whether states are hiding germ weapons programs has been nonexistent because the 1975 bioweapons ban has no inspection measures. Yet, in 1995 a small United Nations inspection corps pulled off a spectacular verification feat in the face of concerted resistance from Iraq's Saddam Hussein and popular skepticism that it was even possible to conduct effective biological inspections. Working from sketchy...