If you don’t explode the nuke at ground level the radiation from fallout will be low. As you may recall from our attack on Iraq 20 years ago cruise missles were accurate enough to enter a building through the front door. No need to go nuclear. Maybe a bomb that just emits radiation that kills people?
If Donald didn’t make a secret agreement with Russia and China to proceed on an attack on NK they may not like what we do.
Apparently, Obama didn’t get the job done so now Trump can pull the trigger. Just remember if it wasn’t for US money, technology and US consumers, China’s economy would be down at the bottom of the list. Just above Russia at 26th.