We know that death always works when it comes to changing behavior.
There may be other means. Good will is a goal but not the operant tool to effect change. First, you have to be open to the possibility of ending war before AI discovers our existence is the problem and enacts a solution.
We know what doesn't work like; pacts, treaties, extortion, big lies, financial penalties etc.
I look to neurobiology and genetics but a delivery system can not be voluntary or complex. We may already be getting help to quell our worst war reactions. If not and we screw up big time it won't be the only extinction age followed by reemergent new life. Half a billion years makes for big changes.

My post to Lighter about being smart and I being a pacifist was inexplicably deleted.
Peace or condemning war should not be considered dangerous speech.
For some the concept of peace is as corny as the song 'I'd like to teach the world to sing'. For others, it is what they seek in life.
I think peaceniks are in the majority.