Answer:
The main obstacles are the strained relations between North Korea and other countries apart from South Korea, including the United States & China
Explanation:
The main obstacles are the strained relations between North Korea and other countries apart from South Korea, including the United States & China. The major sticking point is that the U.S. and North Korea are in a military conflict legally, meaning that the termination of Korean War was only a ceasefire they never really addressed all the problems of that war formally. And that's why U.s. forces are still in South Korea, and this is why they are all on armed alert pretty much, they can combat at any moment.
