ABSTRACT
The main purpose of this chapter is to demonstrate that abstract cosmopolitan principles fail to determine concrete ethico-normative principles for who ought to what. First, I argue why abstract versions of moral cosmopolitanism fail what I call the indeterminacy challenge. Second, I discuss various models that might overcome the indeterminacy challenge. I conclude that that the concrete normative questions of who ought to do what and at what political institutional level depend on which meta-theoretical and methodological assumptions are assumed.
