The Draken was flown by four different air forces, so you have up to four nationalities you can choose from.
Remember, the story is about the character, not the plane. Just look at games like Ace Combat; if we take the canon plane of the Razgriz, for example, their F-5E's and F-14A's pale in comparison to many of the things they face, but they become feared as some of the greatest pilots in their world nonetheless. A man becomes an ace because of their own skills, not their plane. Ever heard of the Rafale that "shot down" the apparently superior F-22 in a training exercise and the same for the Typhoon's (even though the broke ROE, but we'll forget about that for a moment)? That's a great pilot, not because of his plane, but because of [i]the pilot[/i].