A decade before being proclaimed part of the "axis of evil," North Korea raised alarms in Washington, Seoul, and Tokyo as the pace of its clandestine nuclear weapons program mounted. When confronted by evidence of its deception in 1993, Pyongyang abruptly announced its intention to become the first nation ever to withdraw from the Nuclear Non-Proliferation Treaty, defying its earlier commitments to submit its nuclear activities to full international inspections. U.S. intelligence had revealed evidence of a robust plutonium production program. Unconstrained, North Korea's nuclear factory...