qnli question: Who stated that "All politics reduces itself to this formula: try to be one of three, as long as the world is governed by the unstable equilibrium of five great powers.?" sentence: The balance of power between the Great Powers became a major influence in European politics, prompting Otto von Bismarck to say "All politics reduces itself to this formula: try to be one of three, as long as the world is governed by the unstable equilibrium of five great powers."