A UNPA could be created through a stand-alone treaty. This would have the advantage that as few as 20 or 30 economically and geographically diverse countries could establish a UNPA, and it could expand as more countries ratified the treaty. Strauss notes that this is the method by which most international bodies, such the World Health Organization, International Labour Organization, and International Criminal Court, were founded. The way to get started presumably would be to hold a conference of plenipotentiaries to draft the treaty; then the ratification process would begin.