In response to the "threat" from North Korea, the US is putting THAAD missiles in South Korea. You can read about them here:
Thinking the missiles actually are aimed at them, China responded:
China said on Thursday that it would stage live-fire drills and test new weapons to protect its national security.
You can read the rest @
If you recall, the US also put THAAD missiles in Europe to threaten Russia:
Are we responding to actual threats, or are these just red herrings which are being used to justify US aggression against China and Russia?
I strongly believe that China and Russia, if left alone, would pose absolutely no security threat to the US. I also believe the US will attack anyone, anywhere, anytime merely to preserve the power and privilege of US oligarchs, bankgangsters, corporate CEOs, and their accomplices in the one percent.
The real "threat" posed by China, Russia, and the rest of the BRICS is the possibility of a new world order which is more fair and just than the one being imposed on the world by the US.