Perhaps they haven’t joined because of requirements set forth by NATO for membership. I should hope after this brave and solid defense of their country, they would be invited. Frankly, you’d have to go back to WW2 to see an example of a country’s will to survive under some trying conditions. At nearly 76 I’d learn the F-16 and help out. Manpads be damned, I’ve been there before on a mission far less existential than this one.