alt Hacker NewsDPRK is arguably one of the most successful national socialist states in existence.
(You might look at it and think, "if that is success, then how you define failure"? but don't forget, it took all of 12 years for the German Nazis to go from taking full control to having their country completely devastated.)
In what ways is North Korea socialist? In practice it appears more a hereditary autocracy with an elite class and everyone else barely surviving on the scraps.
German Nazis were socialist in name only, to appeal to the working class.