It's Trump's fault because he didn't have to go into hysterics with his bombastic threats. What Trump actually did was get the UN to sanction one third of North Korean exports. The US can't do anything else to stop North Korea from building workable ICBMs short of an all-out invasion,  which would result in the loss of millions of lives in the Korean Peninsula, including a quarter million Americans there, and probably at least 50 thousand Americans dead, another 100 thousand US casualties. China hasn't launched missiles at us, nor has Russia. I can see no motivation for Korea to do so. But Korea likely thinks it needs a deterrent against US invasion, given that we invaded them before.

No, those threats, loud, boastful, highly visible, and daily, are mainly to distract US citizens from noticing how Trump is being investigated for corruption, how Trump can't get anything done, how Trump has broken every promise, what an incompetent clown Trump is. Our unfunny clown president.