Answer
The 1954 Guatemalan coup d'état, an overthrow of President Jacobo Árbenz Guzmán, occurred in 1954. The CIA, led by Allen Dulles, played a pivotal role in orchestrating the coup. The operation, codenamed PBSUCCESS, involved a covert campaign that utilized psychological warfare, economic sabotage, and military intervention. The coup marked a significant event in Cold War history and raised concerns about US intervention in the internal affairs of sovereign nations.