The Threat of Sparta in the Long Run

Athenians are already the envy of other greeks with our wealth and diverse achievements. What will happen when we improve further and begin to outshine everyone in the world? At everything? Spartans seldom travel or interact with foreigners, but they cannot keep themselves entirely in ignorance of developments elsewhere. Even going to war gives them some inkling of what life is like in other cities that are wealthier and freer than they are. And it's the knowledge that would transform north corea less than the guns. The knowledge can cause the citizens to change their ideas, and get enough citizens to change your ideas, and then you can have a regime change. We ourselves should be at least as wary