I would not call it clickbait. "nuclear test" is a term that has a specific meaning, and it seems that most people would read the headline as meaning that the

I would not call it clickbait. "nuclear test" is a term that has a specific meaning, and it seems that most people would read the headline as meaning that the US has set off a nuclear (fission or fusion) bomb, unless I am completely reading it wrong. I would consider the headline to be disinformation.