It is over six years since the 2005 UN World Summit endorsed the Responsibility to Protect (RtoP), thus recognising an individual state’s responsibility to protect its citizens from four mass atrocities – genocide, war crimes, crimes against humanity and ethnic cleansing. While the 2005 World Summit Outcome document passed by consensus, regional differences have emerged as individual states and regional organisations sought to translate word into deed. This NTS Perspectives investigates the RtoP’s traction in Asia (focusing on Southeast Asia), identifies key stakeholders in the region and offers pathways forward.