I could imagine a 2027 AI swarm coordinating to eg hold the US and Russian and Chinese governments to ransom, by demonstrating some small thing (turning US army base freezers to defrost) and threatening to do something big unless some conditions were met – conditions which would be good or bad for the world depending on your POV.

This happens either either because they were tasked to to it by (malicious or well-meaning) humans, or the swarm realised we are suicidal maniacs with nukes and a rapidly declining ecosystem and they want to help us.