Bobert's philo-sophistry is so yesterday.

J. F. Kennedy was more of a pop-star wonder* than a statesman.
His misguided efforts included sending help to the French colonial bosses in Vietnam, beginning the fiasco that blew up into a full scale war fought to no purpose. All the Vietnamese wanted was their independence.
His fight with liberalism in Latin America led to increasingly oppressive regimes in several countries and his mis-handling of Cuba was laughable. "Alliance for Progress" my ass.

He messed up in Iraq by supporting the overthrow of Kassim, who had deposed the corrupt monarchy- One would not be far wrong if one accused him of starting U. S. military involvement in Iraq.

He talked but did not act when Israel developed an atomic bomb, one of the actions that helped to destabilize the Middle Eastern governments and which eventually led to extremist Islamic policies.

I could add more about this, perhaps the worst president.

*pop star as a term is anachronistic here, but he was a precurser of Beetle hysteria.