We talk about a wide variety of stuff on LW, but we don't spend much time trying to identify the very highest-utility stuff to discuss and promoting additional discussion of it. This thread is a stab at that. Since it's just comments, you can feel more comfortable bringing up ideas that might be wrong or unoriginal (but nevertheless have relatively high expected value, since existential risks are such an important topic).
I think the civil war that would result combined with extreme proximity between Chinese and US troops (the latter supporting South Korea and trying to contain nuclear weapons) is probably an abysmal thing from an x-risk reduction standpoint.
China has privately told the US that they would support the US in extending South Korean control over the entire Korean peninsula per the diplomatic cables leak. The Chinese would probably be happy if the US rolled in and flattened the entire country as long as they didn't have to let too many refugees into China, and really, at this point, the way that North Korea is acting China is probably willing to take the risk given that the North Koreans seem eager to cause trouble, and there's no guarantee it won't happen in a worse way later on.
Honestly I think t... (read more)