I of course have the perspective of an American, and I tend to believe in open and full disclosure in most things, although of course that doesn't work with regard to military strength and tactics. It's difficult to try to put myself in Kim Jong Un's position, but I would imagine he grew up very differently, and was taught that the United States and other free countries are out to get North Korea and end the rule of his family.
He may actually believe that we want to go in and steal natural resources, take over the country, etc., but regardless of what he's been taught, it's time to stand up and try to take an objective look around. He is responsible for the lives of many, and if indeed there is a prevalence of hunger, lack of medical care, etc., he should be open minded enough to seek out solutions for those problems. I agree that there are better ways in which to spend the country's budget than doing things that could potentially provoke military intervention.