Hold on, the implication of "it would be a shame if anything happened to $nice_thing" is usually "I will kill/destroy the $nice_thing if you didn't take my offer", and here, nice_thing = "the world".

Are they saying that they will manually and willfully start a global thermonuclear war if China didn't listen, not that there are risks of AI accidentally causing one? Is that what they're trying to say?