Spoiling for a Fight?

Seoul resident Chung Woo Shik, 62, was a boy when the Korean War ended a half-century ago, and he still remembers the horror of a conflict that left more than a million Koreans dead. But as he strolled through Seoul last week, holding onto his 2-year-old grandson with one hand and balancing a pizza box with the other, he seemed remarkably unruffled by the vitriol spewing from Stalinist North Korea just 40 kilometers away. After taking another step toward mass production of nuclear weapons by announcing it was restarting a plutonium-producing reactor, North Korea last week vowed to unleash "total...