The propaganda mill in North Korea keeps spitting out vile rhetoric about its military capabilities and nuclear strength.
After years of famine, prison labor, human rights violation, and international stoogery, the Democratic People's Republic of Korea (DPRK) insists on interacting with the rest of the world in a bellicose manner.
Huge mistakes are being made by their aristocracy (I wouldn't dare call this a communist/socialist state, those terms are reserved for economic policies, plus the Kim elite have made themselves the only legitimate heirs to power). They consistently try the patience of the international community and their closest ally: China. China has kept the DPRK from imploding for several decades. Without Chinese support, the DPRK would fizzle out. They are trying to drag one of the worlds most rapidly developing countries into a war with the US. But is China willing to follow its ally into war?
No.
China's economy, however fast it may be growing, depends on the US and other western countries to buy its exports. Without a buyer like the US, their economy would go back to an agrarian society. Their GDP would buckle. Surprisingly, they know this. They have since this time drawn up their own resolution for North Korean sanctions at the United Nations. But does it matter to Kim Jong-Un and his military advisors?
No.
They have kept the heated rhetoric at a boiling point. After nearly sixty years of armistice, the DPRK's leaders think that reaffirming their might is a reassurance to their population. Which it isn't. This is a sign of desperation. Like a suicidal teen acting out in school for attention. The people are probably losing interest in their regime or giving up hope. As the DPRK fails to reign in support, they pump up the propaganda. But it's arrogant to say that the people aren't already brainwashed into supporting their glorious leader. Years of propaganda have reaffirmed the Kim's mystical, supernatural bloodline. The myth of the birth and death of Kim Jong-Il gives some credence to the national religion and its impact on the population. The DPRK in its hopeless endeavor will eventually launch a nuclear weapon on South Korea, Japan, or American bases. Will those warheads reach there?
No.
The US military has several options on the table if this happens, but there is one option that is clearly the best: They could shoot down the rocket and pretend it never happened, making the regime look like buffoons before their people.
The key thing to remember about North Korea is that it wants a war to reaffirm its fading power.
Why give them that?