On July 28th, 2017, a missile launched from North Korea dropped in the waters of Japan(s exclusive economic zone.
North Korean official committed that it was an ICBM, meaning it could reach North America over the Pacific Ocean.
The US and South Korea immediately responded to the news. They said considering a military response. South Korea requested the US to equip additional anti-missile defense units.
Independent: US and South Korea discuss 'military options' in wake of latest North Korea ICBM test
It is unclear whether North Korea has completed the development of a nuclear weapon to be attached to the head of the missile. If so, it is evident that the US is endangered by the threat of North Korea.
Donald Trump says China should take an initiative to make North Korea disarmed so far. But the movement of China is sluggish because China has a close relationship with North Korea.
Anyway, this provocative act will make North Korea more solitary in the international relationship. North Korea may intend to become an equal position to the US. On the other hand, South Korean President, Moon Jae-in, who is relatively affirmative to North Korea, will have difficulty in developing a friendly relationship with North Korea.
Therefore, I hardly believe North Korea has a rational plan for the future. I am afraid Kim Jong-un is unaware of the current situation. The possibility of emerging a nuclear war has been increased.