I want to know the answer to the following 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.?"
All the background I'm provided with is that "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."". Is that enough to answer the question?