For nearly a decade, a colonel on the Polish General Staff, Ryszard Kukliński, provided invaluable information about Soviet and Warsaw Pact military activities to the U.S. Central Intelligence Agency (CIA) under the codename “Jack Strong.” Along with Soviet Colonel Oleg Penkovsky, who cooperated with the CIA in the late 1950s and early1960s until he was arrested and executed by the Soviet regime, Kukliński has gone down in history as one of the most valuable U.S. intelligence sources in Eastern Europe during the Cold War. This essay examines Kukliński's case in light of three recent Polish-language books written from divergent perspectives.

中文翻译：

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情报的秘密战争：“杰克·斯特朗”的神秘使命及其对 1970 和 1980 年代冷战的影响

近十年来，波兰总参谋部的一名上校 Ryszard Kukliński 以“杰克·斯特朗”的代号向美国中央情报局 (CIA) 提供了有关苏联和华沙条约组织军事活动的宝贵信息。与在 1950 年代末和 60 年代初与中央情报局合作直至被苏联政权逮捕和处决的苏联上校奥列格·彭科夫斯基（Oleg Penkovsky）一起，库克林斯基已成为历史上寒冷时期美国在东欧最有价值的情报来源之一战争。这篇文章根据最近从不同角度写成的三本波兰语书籍来研究库克林斯基的案例。