Summarize the main elements of Posner's perspective on the utility of international law as a means to enforce human rights. What are the strengths of the international human rights legal regime? What are its weaknesses? How would Posner answer the question, to what extent has international law helped to advance human rights internationally? Contrast Posner's answer to this question with perspectives held by scholars such as Kathryn Sikkink and Beth Simmons. Finally, offer your own, well-grounded position on the extent to which international law and transnational advocacy networks can bring countries into compliance with international human rights agreements/standards.

Reference: book "The Twilight of Human Rights Law" by Eric Posner

If you have extra reference, could you provide it as well. Thank you :)