Kim Jong Un has IMHO already done enough to justify a US military response. He's pointed missiles at American bases in Japan and Guam. He cut the line that allows emergency communications between North and South Korea. Last year he fired missiles at a South Korean residitial area killing innocent civilians seemingly for no other reason than to look tough/crazy. Before his rise to power his father ignored the international community and has successfully proliferated nuclear weapons, weapons Junior now possesses. Under treaty agreements, military actions against South Korea are considered attacks on the United States of America. Un has publically stated a state of war exists between North South Korea, translation: he declared war against America under US treaty obligations. The question is will he come to his senses and back up and/or will president Obama spank that A and treat North Korea as part axis of evil or ignore him? My observation is Obama talks a good game of peace and love when it comes to playing nice with homocidal maniacs but still kicks butt most of the time.
Not sure if I should even say this but I heard on relatively good authority troops scheduled for deployment in Afghanistan have had their orders cancelled 'in case they're needed elsewhere.' A new type of naval sea to surface battle ship never used before is now parked off the coast of North Korea.