Terence Roehrig is professor of National Security Affairs and director of the Asia-Pacific Studies Group at the U.S. Naval War College.
The Republic of Korea (ROK) Navy welcomes visitors to its website with the headline, “To the Sea, To the World.” Over the past two decades, South Korea has been building an ocean-going, blue water navy that is capable of extended operations in waters beyond the peninsula. After the sinking of the Cheonan, the Navy scaled back plans to build a blue water navy to focus attention on more immediate defense needs around the peninsula. Last week, the ROK Navy announced a plan to resume the expansion of its blue water fleet with a new line of submarines, more Aegis-class destroyers, and twenty frigates.