They are: The ISO also has codes for vaguely-defined places like "the European Union" and "Metropolitan France." Sometimes you'll see these regions listed on "select country" menus, which means the person who made it likely stole the ISO list but never bothered to edit it.
On the cover, the book claims to profile 230 "countries." Yet inside the book only 217 places are profiled with full country status.
The sheer span of geography makes it difficult to argue that there is no difference between a guy living in Amsterdam and a guy living in Aruba, despite what the law may say.
As well, some of today's "real" countries are so mind-boggingly tiny they're almost completely irrelevant.
The extras on the Olympic list can thus be recognized as representing the "core group" of pseudo-countries.