International Human Rights and the International Human Rights System A Manual for National Human Rights Institutions It then considers the various mechanisms in the international human rights system and how NHRIs can engage with them. Finally, it examines how NHRIs collaborate internationally and regionally. KEY POINTS: CHAPTER 1 • The Vienna World Conference on Human Rights in 1993 encouraged all States to establish independent NHRIs in compliance with the Paris Principles. • The United Nations High Commissioner for Human Rights has been a principal advocate for the establishment and strengthening of NHRIs. • NHRIs are required to interact with the international human rights system. 4 | Chapter 1: Introduction