Russian term coined during the Cold War to describe a warning that carries no real meaning.
An empty threat
Person 1: "Man, this asshole told me to pay him money or he will burn my house to the ground."
Person 2: "Relax, he probably gave you China's final warning."
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.