I have been informed that the reason Yaakov was upset with Shimon and Levi for slaughtering the males of Shechem is because the inhabitants became circumsized and had a new halachic status, or because by killing them they put Yaakov and his family in danger. However, before they circumsized they were liable to die for neglecting to set up courts and carry out justice against their prince. Would there be justification today for a war with a country/society for them failing the Noahide command to set up courts and carry out justice? What if the neglection is not a rapist, but a thief, idolator/witch, or another Noahide law? Thank you.