BS
If this thing starts, it will not be a series of escallating stages. Trump and top military people have already telegraphed that this will be an all-or-nothing affair. This is true brinkmanship. Kim needs to face the fact that if he initiates war, the U.S. has no choice but to assure his complete and immediate neutralization.
President Trump was just on a live broadcast in a White House meeting with Spanish P M Rajoy. Each were seated in a chair on either side of a small table. Each made a brief statement to the press.
All very routine...except that rather than being flanked by their respective national flags, the flags displayed were those of the USN and the USMC.