North Korea is not a socialist country at all? They are a dictatorship, no dictatorship could be socialism, it could be communism if you want to call it? Communism doesn't have anything against the dictatorship and one person ruling, however socialism is literally when everyone has a say in the management and when you have one person rule over everyone that is not very equal rights is it?
If you want to show the north Korea as a socialism bad then I could basically say that Nazi Germany was capitalist as it gets and they did what they did, UK was capitalism as well and killed millions all around the world as well. So, as you can see there are big examples for everyone that could be wrong.
Socialism is not even enough, that is too much, you have to be democratic socialist to give people the right to give up that if they want to, hence everyone gives examples from Scandinavia, because you can turn that country into rightist extremist Christian nation with just one elections if you vote a party like that, it gives you that right, people prefer Democratic socialists and that is why they are like that but they are not forced to be like that, they are given the options.
In accordance with the 1972 constitution of the Democratic People's Republic of Korea, in article 1, it states that "the Democratic People's Republic of Korea is an independent socialist state that represents the interests of all Koreans. De facto or de jure, North Korea removed communism from its constitution in 2009 and adopted a mixed ideology confusing ideas and concepts, starting from absolute monarchy, totalitarianism, market socialism.
Korean ideology is Juche which states that humans control and determine their own destiny as well as additional Songun ideologies where the military takes precedence in the life of the country and the existence of a cult leader is very different from socialism & communism but more inclined towards nationalist autarchy.
At the moment, I don't think North Korea will use its weapons directly, or if there is a nuclear test maneuver that is only for the show-off. North Korea's goal of developing nuclear is based more on economic security reasons, namely to meet the needs for energy, finance, material assistance, easing sanctions, and economic incentives.
North Korea chose nuclear as (deterrence) against the strength of neighboring countries such as Japan, South Korea, and even China and even America which has a military base in Japan. With North Korea's nuclear enhancing their bargaining position in foreign diplomacy and missile technology they also traded.
North Korea is a poor country, dangerous but very smart. North Korea is aware of all its shortcomings but has chosen military instruments in international diplomacy to increase its bargaining power and prestige in the military world. War is not an option for North Korea because it realizes that its only close friend is China.
I also export goods to North Korea (daily necessities) and the fact is that it is more profitable because the payment using the cash system is done before the goods are loaded into containers. But the export regulations are very strict and they already have an export route through the port of China with one type of shipping that serves the route.