As Pope John XXIII addressed his urgent concerns throughout the church establishment in Vatican II, the idea of world peace was at risk of another world war between the two current superpowers, United States of America and Union of Soviet Socialist Republic (USSR). As a response to the United States’s failure in the Bay of Pigs Invasion, the USSR was allowed to intervene in Cuba by their president, Fidel Castro. The USSR wanted to establish nuclear missiles, which they would be 90 miles away from the United States’ southern mainland. This USSR’s threat wasn’t taken lightly by the United States’ president, John F. Kennedy, who decided to form a blockade of Cuba and increase the tight tension between the two superpowers. As the start of another world war was approaching, an astounding assistance came from the Vatican. Pope John XXIII would serve as a mediator between the two nuclear powers of the world during the most apprehensive moments of the Cold War. The pope would read a message that would stun the world. “I beg heads of state not to remain insensitive to the cry of humanity.