Air Koryo (North Korean state airline) fly old Russian-made jets which are under restriction in some parts of the world because of safety concerns. Arriving in the host country's dubiously airworthy old plane looks like a poor relative visiting the extended family dressed in hand-me-downs. The trains may or may not be entirely made in North Korea but they are certainly built or rebuilt there to be unique, secure and incapable of comparison with anything Russia might possess. 'Mine is better than yours', Kim can say, even if that is only because no sane person would ever want what he has got.