Russian troops arrived in the town of Makariv just four days after Vladimir Putin launched his full-scale invasion of Ukraine. This week, Ukrainian authorities claimed to have retaken the town, 65km west of Kyiv, in a daring counter-attack that sent Russian forces into retreat. Andriy Nebytov, the Kyiv chief of police, posted a video on Facebook showing him dressed in full combat gear, visiting the damaged and seemingly deserted town. In one scene he picks up what looks like a crumpled Ukrainian flag. “As long as our flag lives,” he later said in a statement, “our army lives.” The next...