To talk about that question, I recently spoke by phone with Sergey Radchenko, a professor at Johns Hopkins School of Advanced International Studies, and the author of “ To Run the World: The Kremlin’s Cold War Bid for Global Power .

Across the battlefield, both Ukraine and Russia are using fiber optic cables instead of radio waves to connect many of their first-person view (FPV) drones with their controllers. Now, the commander of the First Corps Azov Brigade of the Ukrainian National Guard’s Unmanned Systems Battalion,