The Bay of Pigs Invasion was a failed military invasion of Cuba undertaken by Cuban exiles and sponsored by the US Central Intelligence Agency. The exiled Cubans formed Brigade 2506 with the intent of overthrowing the government of Fidel Castro. Launched from Guatemala and Nicaragua, the invasion was defeated after 3 days of fighting. Castro declared that Cuba should become a Communist-style state during the Bay of Pigs invasion. The Bay of Pigs invasion dashed all hopes that Cuba might stop its slide toward Communism.