Iran's animosity towards the USA is deeply rooted in historical grievances, notably the controversial 1953 coup that ousted Prime Minister Mossadegh and installed the Shah, widely seen as a U.S.-backed intervention. The 1979 Islamic Revolution, which overthrew the Shah, further strained relations, leading to the hostage crisis. Perceived American interference in Iran's domestic affairs, coupled with accusations of supporting opposition groups and imposing economic sanctions, has fueled a persistent distrust. Geopolitical differences, especially regarding regional conflicts and nuclear policies, continue to contribute to the complex and contentious nature of their relationship. The result is a multifaceted dynamic marked by decades of diplomatic challenges and mutual suspicion.