Both the Soviets and Chinese understood that simply being communist was no longer sufficient grounds for an alliance. The Soviets and Chinese had become enemies in spite of a shared ideology. Neither wanted the other to use North Korea as a tool against it. We should add that South Korea and the United States themselves were not eager to see the North Korean regime fall. South Korea did not want to bear the expense and risks involved in reintegration. The United States was content with the status quo in the Korean Peninsula, as its primary interest there was minimal conflict. And out of this paradoxical strategy emerged the contemporary North Korean state.
I really find the whole situation, and North Korea itself, fascinating. In a morbid kind of way.
With all their posturing and shooting shells into the sea; be it testing or showing off, whatever the case may be - would they really attack anyone? The general Reddit opinion seems to be that "It's all a cry for aid" - but I wonder if they really would go through with an attack. They appear to have the motive and the capability to attack, say, Seoul, but surely they'd have the hammer dropped on them soon after and it would be pointless attacking when you know you'll be destroyed for doing so.
Unless they're fueled by such hatred they actually want to see their enemies burn even if it means certain death for themselves?
Ahh I dunno. It's a weird scenario.