Last month, the U.S. recognized Venezuelan opposition leader Juan Guaido as the “interim president” of Venezuela. Since then, Canada, the European Union, and a slew of other countries have followed America’s lead. The move is another sign of the return to Cold War-era U.S. policy in Latin America under President Donald Trump and Secretary of State Mike Pompeo. Today, using records from the Central Intelligence Agency archives, we’ll take a brief look back at the last half-century of U.S. involvement in the region.

In the late ‘50s, a former Army Intelligence chief alleged to the Federal Bureau of Investigation that a secret cabal of socialists and Communists were infiltrating the government. The 122 named individuals included some senior officials and even hardline anti-communists such as Central Intelligence Agency spymaster James Angleton. Though the FBI ultimately dismissed the accusations as the result of an interagency feud, the Bureau did did congratulate itself on having already been aware of most of the individuals’ alleged subversive tendencies, which included sometimes having thoughts similar to those of socialists.

As part of MuckRock’s ongoing project to declassify and collect internal Central Intelligence Agency histories, the Agency recently released a copy of the history on coordination between inbetween intelligence agencies in the aftermath of World War II. The history outlines various “turf wars,” some which predate the Agency itself, which were the result of disagreements about what the law said and who had what responsibilities. According to the history, many of these disagreements and differing interpretations stemmed directly or indirectly from the language of the National Security Act of 1947, which both established and empowered the CIA, as being “purposefully vague.”

A recently released copy of the Federal Bureau of Investigation file for Central Intelligence Agency Director Admiral Roscoe Hillenkoetter reveals that shortly after his retirement, Hillenkoetter admitted to FBI Director J. Edgar Hoover that elements of the Agency were corrupt.

One of the more fascinating revelations in the Central Intelligence Agency’s archives is the fact that, on two separate occasions, the Agency has had the White House bury time capsules of CIA materials in the walls of their buildings. The first box was jokingly referred to by Director Allen Dulles as containing “secrets,” and that came amazingly close to being true. The second, placed by one of Dulles’ successors, was nearly a plot device in a spy thriller, thanks to a suggestion that they place the true names of every Agency employee within the box.