Continuously innovating. >> Yes, for sure. >> Beside a frozen lake, Ukraine's security service took us to see one of their most treasured weapons.I mean, it looks a bit like a fishing boat, Scout. That's an outboard motor. >> Yeah. Yeah.>> It's a sea drone developed in Ukraine called Sea Baby. We're protecting this operator's identity because he's a target for Russian assassination. >> What's the payload on this.It can really take 2,000 kg. >> 2,000 kilos of explosives. Is that enough to take out a Russian ...

Now, Holly Williams on assignment for 60 Minutes. When America went to war with Iran last month, the US military faced an enemy using mass-roduced drones to deadly effect. The same weapons have been used for years in Ukraine, some of them supplied by Iran to Russia.Unmanned and remotely controlled, drones have transformed the Ukrainian battlefield. They're estimated to inflict around 80% of combat casualties on both sides. The technology is nothing short of revolutionary, and it's evolving rapidly.As we dis ...