Drone flying. More than a half dozen US drone startups have donated or sold equipment to Ukraine, WSJ reported. Ukrainian officials questioned whether Chinese alternatives had impeded military defences, per WSJ. It follows calls for the Chinese manufacturer, DJI, to stop doing business with Russia. Brinc Drones and Skydio, two US-based firms, have been donating or selling scores of drones to Ukraine, a report says. The companies stepped up after Ukrainian officials raise concerns that the Chinese drone maker DJI may have intentionally created "technical glitches" in its products to impair Ukraine's defence, according to a WSJ report . DJI...