A report by the high-level panel appointed by U.N. Secretary-General Ban Ki-moon on post-2015 priorities to carry on from the U.N. Millennium Development Goals, titled “A New Global Partnership”, builds on growing interest in “public-private partnerships” to address governance challenges across a wide range of issues...[W]hat lessons can we learn from existing initiatives on what works and what doesn’t in implementing collective action strategies?...[We] don’t yet have solid evidence or even shared views on what good practice for such initiatives looks like; and we are still in the early stages of developing the tools needed to evaluate their impacts across the board...That’s why this year’s Global Compact summit and the discussions leading up to 2015 must give central attention to learning from experience on what makes partnerships work, in particular for those who are most vulnerable and in need of assistance...One important contribution to that aim can be found in the U.N. Guiding Principles on Business and Human Rights...Given the broad backing these guiding principles now enjoy, public-private partnerships going forward should include in their governance arrangements measures to reinforce existing state duties as well as corporate due diligence processes to avoid adverse impacts, and to address them where they do occur.