On the other hand, SK could slash down most of their defense budget, as it would be largely superfluous if NK disappears.
I think an immediate integration wouldn't be a good idea, it would be better to create first some kind of free trade economic area with a restriction on immigration but a large amount of funding from SK.
Since SK's defense budget is larger than the whole budget of NK, NK living standards could duplicate rather quickly. After a few years, both Koreas might be ready for unification.
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I am not a weapons expert, but those rifles look like the ones i used in Battlefield:1942 in the Soviet side...
What is the funny bit, though? the guy that pulls the trigger but nothing happens?
Maybe they are actually WWII soviet supplies...