The Rise and Fall of Ukraine’s Drone Warfare Mastermind

The popularity of drones, and the defense minister who heavily promoted them, helped lead to a clash in which President Volodymyr Zelensky sided with the military brass.Mykhailo Fedorov, the former minister of defense for Ukraine, speaking Thursday in Kyiv. Mr. Fedorov’s growing reliance on drones had reportedly irked some members of the military’s leadership.