Masturbation, North Korean-Style

A week ago, North Korea (DPRK) celebrated its Founder's Day, with a failed rocket launch and a spectacular military display.
Military parades can be pretty awesome when you write a blank cheque while your people starve! Oh yes, it's quite impressive what you can do...for example, rolling out an enormous 16-wheel missile carrier (sorta like boys in the nuclear playground waving their dicks at each other)! This particular dick can launch missiles too, and the Western Worry is that DPRK can now take its Big Boys' Toys all over the playground, making them harder to find and destroy.
This 122-ton carrier is far too sophisticated for DPRK to have built, so the fingers point at China. While its Foreign Ministry says "Not us, grasshopper!", a Chinese firm that makes these big-time transporters is bragging about the sale on its website!
Some kind souls say maaaaaaaybe the company didn't sell DPRK an entire vehicle, just a chassis, thinking it was for civilian use. China could play this card to avoid accusations of intentionally violating a UN ban (on selling DPRK technology for a ballistic missile programme). Or maaaaaaaybe the Chinese firm sold it to a 'front' company and didn't know who the end-user was: the company denies trading with DPRK. WTF? Get REAL!!!
The Chinese firm is Hubei Sanjiang Space Wanshan Special Vehicle Co. - part of China Aerospace Science and Industry Corp, a state-owned company making the Shenzhou space rocket as well as missiles. Hubei Sanjiang itself makes vehicles to transport heavy toys like ship parts and large-scale machinery...and missiles. It is inconceivable that such a company made/delivered 'the largest self-propelled overload special off-road transporter in China' to North Korea, with no idea what it would be used for! And therefore its also inconceivable that the Chinese government isn't in this, up to its neck!

Problem is: not a damn thing can be done. The UN Security Council can't punish it in any way... because it's one of the five permanent Council members and can block any actions against itself! So China joins in the dick-waving!
And to put the icing on the cake, DPRK has issued a blatant threat, saying it'll soon conduct "special actions" that will reduce South Korea's conservative government to ashes within minutes: "Once the above-said special actions kick off, they will reduce all the rat-like groups and the bases for provocations to ashes in three or four minutes, in much shorter time, by unprecedented peculiar means and methods of our own style."
Is this just Daddy's Little Boy wanking in the playground?
Or will we see horrific escalation over the DMZ some time soon?