After a year of trading colorful barbs with the American president and significant achievements in North Korea's decades-long nuclear and missile development programs, North Korean leader Kim Jong Un declared mission accomplished in November 2017. Though Kim's pronouncement appears premature, North Korea is on the verge of being able to strike the United States with nuclear weapons. South Korea has long been in the North Korean crosshairs but worries whether the United States would defend it if North Korea holds the American homeland at risk. The largely ceremonial summit between US president Donald Trump and Kim Jong Un, and the unpredictability of both parties, has not quelled these concerns and leaves more questions than answers for the two sides' negotiators to work out. The Korean Peninsula's security situation is an intractable conflict, raising the question,