Admiral Harris; ‘I Need High Power Options’
North Korea Will Fire a Nuclear Weapon
https://www.youtube.com/watch?v=1WgCB9ZqgiA
I don't doubt that North Korea would fire a nuke at the South or Japan if they had the capacity. But I don't think we would use nukes unless we had the full support of both Russia and China in doing so.
Too easy to accidentally start a large nuclear war between parties who do have the capacity.