Ukraine's ground robots and drones have different strengths and, when working together, can be more effective in combat while keeping soldiers out of harm's way. Dmytro Smolienko/ Ukrinform/Future Publishing via Getty Images Ukraine is using ground robots to attack Russian soldiers with weapons and explosives. A maker said they're even more effective when used alongside aerial drones. Drones can scout faster, while ground robots can carry heavier weapons. Ukraine's ground robots, armed with we