Biophysicist Oleh Halaidych, 34, helps make drones at a workshop in Kyiv. "I think we are all motivated because we see that this is a cheap and accessible way to make weapons," he says. "They kill the ...

At the first annual Best Drone Warfighter competition, soldiers brought their homemade drones for test flights and evaluations.

Unmanned vehicles are increasingly becoming essential weapons of war. But with a potential conflict with China looming large, Taiwan is scrambling to build a domestic drone industry from scratch. In ...