What do we know about the US solider in North Korea?

Seoul, South Korea CNN — For the first time in decades a US soldier is believed to be in North Korean custody. That is a scenario that could cause a diplomatic headache for the United States while it, alongside ally South Korea, tries to keep pressure on Pyongyang as the isolated nation ramps up its ballistic missile tests and bellicose rhetoric. The US Army has identified the soldier who crossed the demarcation line into North Korea on Tuesday as Pvt. Travis King. US military officials say King "willfully and without authorization" crossed into North Korea while taking a civilian tour…