Ideal and Nonideal Theory in Political Philosophy

I am currently working on a paper on ideal and nonideal theory in political philosophy, focusing on Rawls' approach, which has set the framework of debate over the last 40+ years.  It is an extremely complex area of thought that is (in my mind) essential to any theory of political morality, rights, justice, etc.  Hopefully be able to post about in the coming weeks, see if you fellas have any thoughts.