Strongly insinuating that North Korea was behind the sinking of a Navy warship, President Lee Myung-bak in early May announced major changes in the way South Korea’s military will defend the country. “It has now become clear that the Cheonan did not sink from a simple accident,” Lee said in an opening address at an unprecedented meeting of military commanders on May 4. “As soon as the incident happened, I realized that it was a grave international issue, that included inter-Korean relations, and made an order to the defense minister to lay bare the cause through international cooperation.” Lee hosted...