AI-automated warfare is looking pretty scary too. I don’t think it will stay in Ukraine.
The situation is sort of like the Internet before broadband. There probably aren't enough AI-capable home machines to have big swarms of bots that run autonomously. If the swarm depends on an LLM API, it will be easier to cut it off once it's noticed.
I think it's an even chance that we will see a bot swarm in the wild (rather than coming from an AI lab) by the end of next year.
IMHO the biggest problems will be with poorly written AI slop software, probably small business crapware produced with minimal investment (maybe entirely without an experienced developer) and legacy equipment that’s been abandoned by the manufacturer. This will lead to disruption but not catastrophe.
Other countries have governments that have earned that level of trust. I believe the US could get there eventually, but it will take a very long time because it has a very long way to go.