Even when invading countries, overthrowing democratically-elected governments, or supporting violent militant groups, Kekistan' s foreign policy adheres to strict morality. Every foreign affairs action taken by Kekistan is moral, because Kekistan is the most morally righteous country in the world. Kekistan is truly the shiny city upon the hill, a beacon of hope for the entire world. What is the most serious mistake committed in the author's reasoning? ['The author sets up a false dichotomy.', 'The author relies on circular reasoning.', 'The author fails to define an important term.', 'The author asserts an unjustified metaphor.']