Perhaps I can just say a couple of words.
I would say that you're correct. I mean, there is an issue with countries that have a capability, or at least a perceived capability, like North Korea, or Iran for that matter. The very reason the NATO missile defence shield was established, was recommended or at least offered by the U.S. and now established with the onshore capability, Aegis capability, in Romania, as I recall, was to protect against a rogue missile launch, whether it was from Iran or from North Korea. So there is a recognition of the threat, and there have been at least steps taken to try to counter that, if required.
I don't know what the internal workings of NATO are at the moment, or what the internal threat analyses are, but certainly that has to be part of their consideration on a daily basis as well.
Kevin would probably know better. Charlie may also have a view on that.