[wahern]

I agree, national enmity is a manifestation of a broader phenomenon. Part of that broader phenomenon is that identity is typically defined, at least in part, in opposition to another group. And identities can nest, intersect, etc.

In context of island erosion, this poses the question of whether a nation without any territory can exist purely in opposition to another similarly situated nation (i.e. both sharing a positive history that is indistinguishable within the context of a broader society to which they've emigrated). And that creates an interesting ethical dilemma if the goal is to preserve national identity, especially one that has been "victimized" by [perpetrators of] global warming.