No, we're not North Korea.
You are obviously confusing an isolated society with isolationism.
Haven't you seen that one guy's sig that says:
Switzerland is non-interventionist. North Korea is isolationist.
Switzerland is neutral, but at the same time is also very active in world's diplomacy. North Korea is not officially allied with anybody, but is hardly keeping away from other countries' business.
Both mentioned states are, in diffrent ways, involved in international affairs. Isolationism was about staying away as much as possible from any international involvements.