A South Korean marine sits on a K-55 self-propelled howitzer during an exercise against possible attacks by North Korea near the border village of Panmunjom in Paju, South Korea Monday, April 1, 2013.... more 
A South Korean marine sits on a K-55 self-propelled howitzer during an exercise against possible attacks by North Korea near the border village of Panmunjom in Paju, South Korea Monday, April 1, 2013. After weeks of war-like rhetoric, North Korean leader Kim Jong Un gathered legislators Monday for an annual spring parliamentary session taking place one day after top party officials adopted a statement declaring building nuclear weapons and the economy the nation's top priorities.(AP Photo/Ahn Young-joon) less 
1 / 30
Associated Press | Photo By Ahn Young-joon
Mon, Apr 1, 2013 4:41 AM EDT