AFTER testing nuclear weapons, now comes the hard part: explaining India's reasoning, reducing nuclear dangers, articulating doctrine, defining requirements, adopting a suitable force posture, establishing effective command, control, and intelligence arrangements, and repairing ties to the international community. This work will take decades of effort and expense. Prime minister Atal Behari Vajpayee's speech before the UN General Assembly did not make much headway on these matters before an admittedly tough audience.