Out of life’s school of war—What does not kill me makes me stronger.  —Friedrich Nietzche, Twilight of the Idols It sounds good, but it is a highly debatable proposition. If we are talking about institutions or nations, then it is even less so. For instance, the war Russia’s strongman Vladimir Putin forced upon Ukraine. The former Soviet republic has fought with determination and tenacity and is still full of the will to fight, three years after the war began. B