"King John" is one of the least studied works of William Shakespeare, but at the same time one of the most interesting. In this play, the author talks about internal conflicts and the struggle for power of King Ivan the Landless in medieval England. Sharp ironic humor and tense relations between the main characters make this play fascinating. In "King John," Shakespeare explores the themes of power, betrayal, loyalty, and moral principles. Each character finds himself in difficult life situations in which he has to choose between his values and duties. This play provokes the reader to think about how power affects a person, how it changes his moral principles and relations with others. "King Ivan" remains relevant today, reminding us of the eternal problems of power and justice."