So have I, but none of them that convince me that an extra 20,000 U.S. army troops make the difference between victory and defeat. North Korea can’t win a war of attrition - South Korea simply has vastly greater resources in every category. They can only win by blitzkrieg and if 600,000 ROK troops can’t contain them, I’m not thinking the U.S. army forces in place will either. Now, this is isn’t talking about the OP’s scenario at all, just a withdrawal of ground forces - I’m still assuming that U.S. naval/air assets would be available via nearby Japan.
I just tend to regard the army units in SK as having a poor cost/benefit ratio. But then I have the same opinion of the U.S. heavy forces in Europe - the threat they were meant to contain, mainly the GSFG, is gone. Despite all the plausible-sounding reasons put forward as to why they should remain, I’m of the opinion that the biggest factor is a half century of inertia.
Yes, really. Your BBC article, as such things tends to do, doesn’t tell the whole story. A 6:1 numerical advantage isn’t terribly useful if you can’t get them there. And as of yet, they can’t. Not 2.5 million, not 250,000. Just about any source will agree that currently, China just doesn’t have it in them to mount a conventional invasion ( though they’re working on it ). For example:
*If there is one common theme shared among PLA watchers, it is that the PLA does not have enough dedicated sealift capability to mount a large amphibious campaign against Taiwan.
…Even with the recent changes, it would be rather difficult for the PLA to succeed in a conventional military victory in a cross strait operation. In many ways, the PLA is still addressing and training at the fundamental level, and even some of the latest additions to its inventory are relatively low tech in comparison with other powers.*
From http://www.china-defense.com/pla/plaamphops/plaamphops01.html
A blockade is a different matter, but that would still be messy and almost certainly not quick.
That’s not to say China won’t eventually be able to launch an effective conventional attack - as I said long-term that’s definitely an issue. But today it isn’t likely.
Just call me Mr. Ludicrous :).