A High-Risk Nuclear Stakeout The U.S. took too long to act, some experts say, letting a Pakistani scientist sell illicit technology well after it knew of his operation. By Douglas Frantz, Times Staff Writer WASHINGTON — Nuclear warhead plans that Pakistani scientist Abdul Qadeer Khan sold to Libya were more complete and detailed than previously disclosed, raising new concerns about the cost of Washington's watch-and-wait policy before Khan and his global black market were shut down last year. Two Western nuclear weapons specialists who have examined the top-secret designs say the hundreds of pages of engineering drawings and handwritten notes...