The withdrawal from Afghanistan is causing irrational blowback in South Korea.

The argument being made is, "If the US will give up on propping up a government against a guerrilla after 20 years, maybe it will refuse to support a bona-fide ally against an external invasion." It seems wildly irrational to me, but the fact it is being made is one aspect of damage caused by the occupation of Afghanistan.

I have no opinion on the specific policy question being discussed.