Russia's efforts to copy Ukraine's wildly successful sea drones won't achieve much, expert says

• Ukraine said Russia is trying to make naval drones by learning from fragments of Ukrainian ones.
• A drone warfare expert said that's unlikely to be much help and may waste Russian resources.
• Ukraine has hammered Russia's fleet, but it doesn't have a proper navy that Russia could target.

Russian efforts to copy Ukraine's naval drone success won't help its invasion and may be a waste of resources, a drone warfare expert told Business Insider.