Abstract: Heiss offers a comprehensive analysis of Cold War presidential doctrines, spanning from the Truman to Reagan administrations, to elucidate the evolving strategies and ideological underpinnings of U.S. foreign policy during this era. By examining the legacies of these doctrines, Heiss underscores their enduring impact on contemporary geopolitics and the challenges of navigating international relations in a post-Cold War world. Through a nuanced analysis of ideologies, strategies, and legacies, the paper contributes to a deeper understanding of Cold War foreign policy and its implications for modern geopolitics.