Earlier quoted context omitted.
So, when will the USA military invade Norway? I assume per your definition of "country" Norway should be a country as well. Norway is a major party in selling oil and gas, but doing it so in NOK. Norway is not even part of NATO. At least until now. So when do you expect an attack by the USA military?
Norway uses US dollar for oil trade. https://www.investopedia.com/terms/p/petrodollars.asp
"In Consideration of the assignment described under Article 2.1 above, Buyer shall pay to Seller a post tax amount of NOK [zz] ([zz]), ref. Article 5."
https://offshorenorge.no/globalassets/dokumenter/naringspoli...
Also the measurement is NOK: https://www.norskpetroleum.no/en/production-and-exports/expo...