Drone warfare: US Army looks to learn lessons from Ukraine

Cheaper and more plentiful than in the past, drones are changing the face of modern warfare, particularly in Ukraine where they have been used extensively by both sides for both attacks and surveillance. Now, the US Army is hoping to put the lessons learned in Ukraine into practice, training its troops on the latest in drone tech and tactics. But the country could find producing drones in large numbers on a scale similar to rivals such as China a tough challenge.