[petertodd]

Not at all. Ukraine had operatives inside Russia. The trucks were not driven in from outside Russia. The system was assembled inside Russia. Also, every single drone had its own pilot: https://www.bbc.com/news/articles/cq69qnvj6nlo

That's also just one of many operations inside Russia. There's lots of sabotage and assassinations that have been done.

You just can't do operations like that without secure communications.