A moment of truth is at hand in the long slog to denuclearize the Korean peninsula. As Science went to press, a team from the International Atomic Energy Agency (IAEA) had arrived in Pyongyang to discuss the shutdown of North Korea's plutonium-generatingrnreactor at Yongbyon. If a game plan is agreed to, the next round of six-party talks, expected to convene in Beijing next month, will tackle thornier issues: a North Korean declaration of its nuclear facilities and materials, and the step-by-step dismantlement of its weapons program.
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