China invades NK and annexes the territory. What would the US and SK do?
China is at least rational. They would probably agree to withdraw or allow South Korea joint administration of the North, in exchange for US troops leaving the Peninsula.
Stay out of it...like President Trump says...America First...NK is a treat to America and Her Allies...
China is there, they can handle this, besides we have the battleships there to back them up if needed...
GO.PRESIDENT TRUMP.GO!!! MAKE AMERICA GREAT AGAIN!!!
End the Korean War by accepting defeat
Open up the borders between the NK and SK and let the free market convince the NK’s which way to go with Burger King, McDonalds and good pizza.
Then, Amazon can use drones to deliver orders to the formerly NKs.
Next, KIA will allow zero down and 48 month leases with no interest on their vehicles to the former NKs.
“China invades NK and annexes the territory. What would the US and SK do?”
Regionally, this is China’s problem to fix.
Same as if Mexico was a bad actor it would be the US problem to fix. (which we may see happen)
“What would the US and SK do?”
Probably applaud because that would be one less megalomaniac for the world to be blackmailed by.
Nothing. The world will be better off. Korea will never be unified as SK could never afford the cost.
Applaud!
Quietly cheer whilst making the obligatory frowny faces.
Breathe a sigh of relief.
Would we care? China would improve the lot of the NKoreans. Rule by china would be no worse than rule by Chiahead. The nukes would be safer. And NKorea would probably be an economic drain to China for at least a decade.
What would we do?
Cheer?
Applaud.
“China invades NK and annexes the territory. What would the US and SK do?”
Celebrate
Let China feed them.
The Chicoms have to know this nutball is crazy enough to use nukes on them as they are on the US, South Korea and Japan. Someone needs to make appeals to the Nork generals to make a decision, you want to live and live comfortably then fat boy needs to take the dirt nap along with all his relatives.
“What would the US and SK do?”
Celebrate.
If the North Korean situation was with Mexico instead, you’d better believe we’d have troops massing on the U.S./Mexico border. And we’d probably end up invading and occupying.
With the way China's economy is more on the ropes than most know [1] (or that they want the world to know), and with 100's of millions of their own poor [2], I would be surprised if they would want to annex NK and absorb their 10's of millions of extremely poor. Such a move would most likely put their tenuous economic situation in a tailspin.
This of course doesn't address the language or cultural differences they would need to absorb.
A far better scenario for them would be to keep the NK buffer, but with a strong (& compliant) military dictatorship in place.