This article identifies divergent views on the nature of the changing order and argues that collaborative rather than hegemonic leadership is necessary to sustain global peace,prosperity and justice.This collaborative leadership would increase the number of actors with effective voice.It calls the evolving order multiplex because of the overlapping yet divergent interests of the actors involved and G-Plus signaling the importance of the increasing number and diversity of actors.It does so in the context of two of the many challenges facing this multiplex G-Plus world:sustaining economic prosperity and coordinating global trade.