You are asking for a personal opinion, which is highly subjective and people will always have different views concerning any issue, especially one like this.
President John F. Kennedy´s handling of the Cuban Missile Crisis was correct in the sense that he acted with an absolute purpose in mind: to defend the United States´ security, his people´s safety and impide a ruthless global rival to have a huge geopolitical gain. Installing and keeping operational nuclear missiles just a 100 miles from American coasts would have given the Soviet Union a strategic military advantage over the USA.
Kennedy put the US forces on high alert and readiness and impeded the arrival of further missiles or materials by blockading Cuba. He may have ordered a bombing raid of the sites in Cuba, as hawks in his administration and in the military wanted, but he knew that would risk a nuclear conflict. He opted for diplomacy, which paid off fortunately; Soviet leader Nikita Khrushchev blinked first, as it is said sometimes.
The Rough Riders were a famous group of horsemen during the Spanish-American War. They were led by Theodore Roosevelt. Roosevelt actually resigned from office so that he could serve.
Copernicus used mathematics to argue that the Sun is the center of the solar system, giving people a convincing alternative to the Catholic Church's Earth-centered model.
