The tactical jets streaked across the sky like meteors, flying from east to west and from south to north. Luckily, the First Sovereign's airspace is vast, unlike those of the small sovereignties, where a single boost would...
However, in reality, small sovereignties often introduce new Sky Knights and "show off" (or declare their presence) to their neighbors as a normal move.
If you're not convinced, just come and fight me!
Neighboring countries without Sky Knights can only watch with envy. Sky Knights mean air supremacy; without Sky Knights, there is no air supremacy. Being weak is the original sin. Who cares about empty chatter?
Airspace equals the combat radius of a Sky Knight's Crystal Jet, no different from the truth measured by artillery shells, essentially the same.
The rule of the jungle is an eternal truth.