Question

This is government agency decid d to overthrow Castro

Answer 1

CIA is your answer

*if you have played black ops 1 zombie in the map “five” there is an intro about the Cuban Missile Crisis cut into the game*

Answer 2

Operation Mongoose
The Cuban ProjectOperation Mongoose Memorandum
October 4, 1962
First page of a meeting report

The Cuban Project, also known as Operation Mongoose, was a covert operation of the Central Intelligence Agency (CIA) that was commissioned in March 1960 during the final year of President Dwight D. Eisenhower's administration.