Wales is a principality rather than a kingdom - but obviously you don't have to be a kingdom to be a country, as our American Mudcatters demonstrate. Liechtenstein, for example, is also a principality, and it has a seat at the UN.

The Isle of Man and the various Channel Islands are "British crown dependencies", and I note the "CIA World Factbook" counts them as countries. But it doesn't count Wales - or England or Scotland for that matter.

Is the United Kingdom the only nation to go in for these second and third class passports?