Lol. They have a determined crew of 6,000 hackers. [0] They stole $100 million from the Bank of Bangladesh in a Dridex attack, and nearly made off with another billion dollars or so. Now, stealing from a needy country like Bangladesh, that's despicable. [1]

They also have perhaps the most controlling state in history and they are disciplined, if poor. In fact, according to a holocaust survivor who was subsequently a judge at the International Court of Justice at The Hague, North Korea's political prison system is as bad as or worse than the Nazis'. [2]
They have zero human rights, no real justice system, gays and lesbians are put to death, mixed-blood children are murdered by the state (the government is openly and bone-chillingly racist).

As for "zero conflicts" you can thank geography and Pax Americana for that as there has been no one for the North Koreans' to attack, though have been constant int'l abductions and assassinations (incl an attempt on the South Korean president), the destruction of a passenger jet, the torpedoing of a South Korean navy vessel, the shelling of a South Korean island, constant drug sales and arms sales by the government including the sale and construction of a nuclear plant to and for Syria, the sale of chemical weapons (those kids killed in gas attacks in Syria, yep, North Korean gas), the overseas sale of hard drugs by the government to raise foreign revenue, and most important and egregious, the wholesale murder and enslavement of their own citizens, if the word "citizen" can be used. In the 1990's during the "Arduous March" the government allowed up to a million people, 5% or the population, to starve unnecessarily while food aid was diverted to the military and funds were used to build up their nuclear program. Malnutrition was the norm. Since being established by the Soviet Union, the DPRK (Democratic People's Republic of Korea -- and the only honest word that name is "Korea") have consistently threatened their neighbors, once invading South Korea with full force after receiving Stalin's approval (a fact which can be read in the Soviet archives). If they haven't attacked again, it's purely because they don't have the means. Oh yes, and they have been hacking, and are considered one of the world's seven cyberpowers along with the U.S., Russia, China, the U.K., Iran, and France. [3]

I don't mean to say that nobody ever has a happy life in North Korea. And I don't have time to go on and on about North Korea, but to pretend that they are mere victims is ludicrous. They inherit some of the worst aspects of the old Joseon Dynasty, the Japanese Empire, and Stalin-era Soviet Union, and manage to add to that.

This isn't to say that the U.S. is without significant blame, of course not. For example the U.S. punished and traumatize North Koreans with an unbelievably destructive wartime bombing campaign after the North invaded the South. But despite serious mistakes the overall aim of the U.S. has been to create a world of growth and stability. During this Pax Americana, with and because of the help from allies and the creation of a global community of states, the world has indeed grown faster than ever before, despite everything that's gone wrong, and there has been less violence.

[0] https://news.ycombinator.com/item?id=15480571

[1] https://en.wikipedia.org/wiki/Bangladesh_Bank_robbery

[2] https://www.huffingtonpost.com/entry/north-korean-prisons-na...

[3] https://www.vox.com/world/2017/10/13/16465882/north-korea-cy...