So, what prevents them from taking non-adjacent regions then? If you can simply walk in and buy a non-adjacent region hundreds of miles outside your borders, clearly logistics are not a concern taken into account. Why then would the military be unable to take non-adjacent regions, provided they had the force and provisions to ensure survival during the attempt?
It's a game mechanic balance restriction, more than a realism restriction.
Logged
Timothy Collett
"The only thing you can't trade for your heart's desire...is your heart." "You are what you do. Choose again, and change." "One of these days, someone's gonna plug you, and you're going to die saying, 'What did I say? What did I say?'" ~ Miles Naismith Vorkosigan