Well, that’s related to what I’m saying. One of the Noahide commandments is not to steal, and kidnapping children and making them slaves surely is prohibited under that mitzvah.
It is also a Noahide mitzvah to set up just courts. That is one of the main things missing in many of the countries — efficient, non-corrupt legal systems that create law and order, prevent people from abusing the poor, and set the stage for a secure, orderly and prosperous society. We should help them with this.