UN human-rights system is a 'regime': that is, a set of norms and institutions that is accepted by states as binding. The UN human-rights regime is based on the Universal Declaration.
The Vienna Declaration and the relatively large number of signatories to the 1966 covenants show that most states accept the legitimacy of this regime. Yet the concept of state sovereignty remains strong, and implementation of human-rights standards is uneven and sometimes disastrously ineffective. Since the end of the cold war there has been some attempt at human-rights enforcement, but this has proved uneven, not very effective, and to some extent counterproductive.
That the regime is strong on declarations and weak on implementation and enforcement reflects the interests of the principal international actors: states.
Nevertheless, the political character of international human-rights institutions can promote human rights if a sufficiently strong alliance of states exerts pressure on an offending state with an interest in conforming with the demands of the society of states.
The international human-rights regime has some prestige in world politics that gives it the potential for mobilization. Its political selectivity undermines this prestige.
The Office of the High Commissioner for Human Rights is another instrument for impartial human-rights promotion and, perhaps, implementation.
The international human-rights regime is political, not philosophical. It responds pragmatically to circumstances, and consequently operates inconsistently. The relatively coherent ideals of the Universal Declaration are, therefore, in practice unevenly implemented.
The UN is a club of States, represented by governmental leaders, and, notwithstanding their conflicts of interest and ideology, they have a common interest in mutual accommodation. This may inhibit robust action for human rights when such action might upset the diplomatic apple-cart.
What is a Regime?