Soviet and East European documents provide significant revelations about the interactions of North Korea and its allies. First, they show Pyongyang’s longstanding interest in obtaining nuclear technology and probably nuclear weapons. Second, they reveal that North Korea’s leadership consistently evaded commitments to allies on nuclear matters—particularly constraints on its nuclear ambitions or even the provision of information. Third, North Korea’s words and deeds evoked substantial concerns in Moscow and other communist capitals that Pyongyang, if it obtained nuclear weapons, might use them to blackmail its partners or risk provoking a nuclear war. When aid from the Union of Soviet Socialist Republics was not forthcoming, the Democratic People’s Republic of Korea sought to bypass Moscow and obtain assistance from the Kremlin’s East European clients and, when that proved fruitless, from Pakistan. The absence of international support reinforced the logic of selfreliance and “military first,” pushing North Korea to pursue an independent line with respect to its nuclear weapons. These patterns cannot be extrapolated in a linear way, but they surely suggest reasons for caution by those hoping to engage North Korea in a grand bargain.