The World Health Organization (WHO) is the specialized agency of the United Nations responsible for international public health. Its core functions include providing leadership on global health matters and engaging in partnerships, setting norms and standards for health and monitoring health trends, providing technical support to countries and assessing health trends, and shaping the health research agenda and stimulating the generation of valuable knowledge. WHO plays a crucial role in coordinating international health responses to emergencies, such as disease outbreaks and natural disasters. It also works on a wide range of health issues, from promoting universal health coverage to combating non-communicable diseases, making it central to global health governance.