Over the last week, the Russian position north of Kharkiv has collapsed. There are two explanations, and both involve an endgame for Putin’s War.Most commentary on military operations over the last week has focused on what is assumed to be the center of gravity of the Russian campaign in Ukraine, Donbas, and the siege of Mariupol. However, in my opinion, the real activity to watch has been occurring on the Ukraine-Russia border. Kharkiv had been under daily artillery and rocket fire, destroying most of it.When I saw the city center of Kharkiv, destroyed by air bombs, I was shocked. Last...