International humanitarian laws govern armed conflict by establishing rules intended to protect non-combatants and restrict the means of warfare. These laws aim to mitigate suffering during conflicts and uphold basic human rights. They hold parties accountable for war crimes and violations, ensuring that those who disregard humanitarian principles face consequences. International humanitarian law is crucial in guiding military conduct, promoting the concept of proportionality, and governing treatment of prisoners. By doing so, these laws serve as a framework for maintaining public trust in international justice systems and uphold moral standards during conflicts.