South Korean soldiers place a camouflage net over their military vehicle during a military exercise near the border village of Panmunjom in Paju, north of Seoul, South Korea, Thursday, April 4, 2013. ... more 
South Korean soldiers place a camouflage net over their military vehicle during a military exercise near the border village of Panmunjom in Paju, north of Seoul, South Korea, Thursday, April 4, 2013. North Korea warned Thursday that its military has been cleared to attack the U.S. using "smaller, lighter and diversified" nuclear weapons, while the U.S. said it will strengthen regional protection by deploying a missile defense system to Guam. (AP Photo/Lee Jin-man) less 
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Associated Press | Photo By Lee Jin-man
Thu, Apr 4, 2013 4:10 AM EDT