The objective is to keep the won from falling much more than is necessary for the long-run adjustment of the Korean economy, and thereby to prevent unnecessary bankruptcies and unnecessary depression of Korean income and employment.
Dropping the won as low as possible in value is the goal. 
mnli hypothesis: Dropping the won as low as possible in value is the goal.  premise: The objective is to keep the won from falling much more than is necessary for the long-run adjustment of the Korean economy, and thereby to prevent unnecessary bankruptcies and unnecessary depression of Korean income and employment.