We are here to discuss emerging threats to America's security as we reach a new century. How do we respond to the threat of terrorists around the world, turning from bullets and bombs to even more insidious and potent weapons? What if they and the rogue states that sponsor them try to attack the critical computer systems that drive our society? What if they seek to use chemical, biological, even nuclear weapons? The United States must deal with these emerging threats now, so that the instruments of prevention develop at least as rapidly as the instruments of disruption.