Tolong jelaskan mengenai Karya dari R. B. J. Walker

Inside/Outside: International Relations as Political Theory (Cambridge: Cambridge University Press, 1993).

One World, Many Worlds: Struggles For A Just World Peace (Boulder, CO: Lynne Rienner; London: Zed Books, 1988).

Out of Line: Boundaries, Borders, Limits (London: Routledge, forthcoming July 2015).

Europe’s 21st Century Challenge (London: Ashgate, in press for 2010). Coauthored with Didier Bigo, Elspeth Guild and Serge Carerra.

After the Globe/Before the World (London: Routledge, 2010).