Finland can't afford that kind of thing. It's a bit unique because it has a large and well-trained army (by European standards) but a smallish defense budget.

The Finnish military basically runs on the collective trauma of the last Russian invasion. There's a general conscription for male citizens, and reserve forces receive regular refresh training to keep their skills active. But you can't transform that kind of spirit into fighter planes.

Specialize in laaarge catapults to shoot the stuff from Onkalo into whomevers big mouth.

Splat!