In a world, where sharks act as guardians, what nation rises to superiority regarding coastal defense?

Obviously, the answer is Finland.

The explanation:

In a world, where sharks act as guardians, Finnish officials, cognizant of their shrinking economy, need big, daring solutions to their economic woes. As a result, they hire professional shark wranglers to catch and release and/or redirect swimming patterns of big sharks (using their native Nokia technology in some way) towards the coastal waters of Finland for protection. Due to its newly established abundance and myriad of shark species, their tourism profits soar while simultaneously adding a strong defense system for their country’s shores. Perhaps most importantly, they finally have a good reason they can use to explain to curious people around the world why their country is called Finland.