Shoot down the NORK missile launch?

Pudgy NORK dictator Kim Jung whats-his-face is threatening an ICBM test launch of a missile that could reach the US with a nuclear warhead in a few days. 
   Today's Wall St Journal suggests that we ought to shoot it down.  The Journal would have a Navy Aegius cruiser standing off shore put a SAM thru the NORK missile as it boosts up. 
   Not a bad idea.
   If I was doing it, I would have an Air Force AC-130 gunship orbit the launch pad and ventilate the NORK missile with 20mm Vulcan cannon fire.  This would need some fighter escort against NORK fighters, and some Wild Weasel support against NORK SAMs, but it's doable.  The strike force could assemble out to sea, over international waters, and fly into NORK airspace only after intelligence positively located the missile standing on the pad.  North Korea isn't all that big and a strike force flying at 400 knots can be anywhere inside North Korea in no time at all.