Operation Mongoose was established in November 1961 to topple the Castro government in Cuba, according to the Mary Ferrell Foundation. After the Bay of Pigs failure, the Kennedy administration set up Operation Mongoose to find ways to remove Castro from power.
The Central Intelligence Agency, Defense Department and State Department worked together on the operation, and General Edward Lansdale coordinated these efforts. Operation Mongoose involved many covert activities, such as gathering intelligence and locating Cubans who wanted to lead the overthrow of the government. It was rumored that an assassination plot was part of Operation Mongoose, but there is no clear evidence of this. The operation was suspended in 1962 after Soviet missiles were smuggled into Cuba.