“…Transnational relations are usually defi ned as "regular interactions across national boundaries when at least one actor is a nonstate agent or does not operate on behalf of a national government or an international organization" (Risse-Kappen, 1995, page 3). Within the fi eld of transnational governance there has been particular interest in the emergence of forms of private regulation, for some regarded as akin to 'private regimes' (Biermann et al, 2010;Cutler et al, 1999;Falkner, 2003;Hall and Biersteker, 2002;Lipschutz and Rowe, 2005;Pattberg, 2005), on the one hand, and of public-private partnerships, epitomised in the so-called 'type-II' initiatives which emerged in the aftermath of the World Summit on Sustainable Development, held in Johannesburg in 2002 (Andonova, 2010;Andonova and Levy, 2003;Bäckstrand, 2008;Benner et al, 2004;Pinkse and Kolk, 2009), on the other hand. However, recent analysis suggests that the transnational governance phenomenon is not limited to these two ideal types and that a range of other initiatives which fall in between these categorisations have been established which explicitly seek to address environmental issues through constituting new forms of transnational relations (Bulkeley et al, forthcoming;Hoffmann, 2011;Kolk et al, 2010).…”