:I completely agree with Ladril.  We can't just take two arbitrary concepts and merge them together to put forward a new idea.  That's OR.  If being undisputed is important, then let's sort the states by: disputed versus undisputed.  If people don't like using specialized agency membership, and think it's only UN membership that's important, then we can do: UN members versus non-UN members.  But we can't WP:SYN the two concepts together to create some new category.  Personally, I think Noleander's more ambitious proposal, to get rid of all the divisions and let the "info" column and colouring explain the subtle differences between states, is the best solution since any choice of divisions is going to be controversial.