What was Operation PBSUCCESS in Guatemala?

Operation PBSUCCESS was a 1954 covert operation organized by the Central Intelligence Agency and authorized by U.S. President Dwight Eisenhower to overthrow the democratically elected government of Guatemalan President Jacobo Árbenz.1

The intervention was driven by U.S. concerns over Árbenz’s agrarian reform program, which sought to redistribute unused land—including significant holdings owned by the U.S.-based United Fruit Company—and by Cold War fears regarding the influence of communists within the Guatemalan government.123

The operation utilized psychological warfare, economic pressure, and support for a small rebel force led by Carlos Castillo Armas. Although the military threat was limited, the campaign successfully destabilized the government, leading to Árbenz’s resignation and exile in June 1954. Castillo Armas was subsequently installed in power, where he reversed previous social and economic reforms. This intervention is widely recognized for undermining democratic institutions and contributing to decades of political instability and civil conflict in Guatemala.124