Serhii Flash" Beskrestnov hates going to the front line. The risks terrify him. I'm really not happy to do it at all," he says. But to perform his particular self-appointed role in the Russia-Ukraine war, he believes it's critical to exchange the relative safety of his suburban home north of the capital for places where...

This is today's edition ofThe Download,our weekday newsletter that provides a daily dose of what's going on in the world of technology. Meet the radio-obsessed civilian shaping Ukraine's drone defense Drones have come to define the brutal conflict in Ukraine that has now dragged on for more than two and a half years. And most...