Defense bolstered five years after Cheonan sinking (The Korea Herald) Five years after North Korea’s torpedo attack on the corvette Cheonan, the South Korean Navy has expressed full confidence in its enhanced capabilities to counter another provocation. Effort to prevent outflow of capital into markets (NK EconWatch) Since the start of the Kim Jong Un era, North Korea has introduced elements of a market economy while at the same time sought ways to mitigate the side effects.