I read about a military AI that would put its objectives before anything else (like casualties) and do things like select nuclear strikes for all missions that involved destruction of targets. So they adjusted it to allow a human operator to veto strategies, in the simulation this was done via a communications tower. The AI apparently figured out that it could pick the strategy it wanted without veto if it just destroyed the communications tower before it made that selection.

Though take it with a grain of salt because the military denied the story was accurate. Which could mean it wasn’t true or it could mean they didn’t want the public to believe it was true. Though it does sound a bit too human-like for it to pass my sniff test (an AI wouldn’t really care that its strategies get vetoed), but it’s an amusing anecdote.