It is fairly obvious that one of the only reasons that the North Korean people haven't starved to death is due to crucial trade with their Chinese neighbors. Heck, China has even supported North Korea in other, more interesting ways (China recently banned Chinese people from calling Kim Jong Un fat). As long as the Chinese stick up for their eastern neighbors, no matter what the US does (short of nuclear war of course), North Korea will always exist. To make matters more complex, it will be very difficult to dissuade China from backing the DPRK because they are doing it more seemingly-valid reasons (see link). In y'all's opinions, what would be the best way to bypass these factors and convince China to let go of North Korea?