Both the US and SK together; and Russia and China together are hosting war games near North Korea. However, according to Varifrank, the Chicom/Rooskie war games are downright odd. They don't look like general practise plus bluff, but more like actual practise for really doing it.
It being the amphibious invasion of North Korea.
Well, I hope it works, because Kim is a scary man. He's got nukes, and he's nuts.