Despite dissuasion from the international society, North Korea carried out long-range missile launch. In reaction to international denunciations, and sanctions the North annuled the Feb 29 treaty with the US.

As the new leader, Kim Jong-Un must solve the chronic food shortage, the economic recession, and the national stability. Instead, Kim is digging his own grave to isolation by threatening to carry out third nuclear test, and illegally seizing and assualting Chinese fishing boats.

At the moment, Kim Jong-Un's regime is known to be in a terrible predicament, both domestic and foreign. North Korea's unexpected and irrational acts are creating anti-North Korean sentiments, and forcing the Chinese government and netizens to turn their backs against the North.

The only way for North Korea to overcome the general crisis is to give up the long-range missile launch and nuclear tests.

It won't lead to the DPRK's destruction anymore then previous incidents where the DPRK pretended to be insane.  Fact is, they're actually very sane and this is mostly for show.  The DPRK receives a lot of food and monetary subsidies from the RoK and the US, and when the DPRK runs low they threaten to resume work on their nuclear weapons program or attempt another missile launch knowing full well we'll just hand them a check or give them some food and they'll go back to being quiet.