Killer robot wars paper meets “War Games” movie conclusion

This article https://www.theregister.com/2019/05/15/lethal_ai_weapons/ tells of the coming killer robot wars, and ironically meets some of the same conclusions as the 1983 movie War Games: https://www.imdb.com/title/tt0086567. Can Laws (i.e. international treaties, etc.) prevent LAWS (Lethal Autonomous Weapons Systems)?