As if setting off a Nuke wasn’t enough, North Korea also tested a short-range missile:

“A single ground-to-air missile with a range of 130 km (81 miles) was fired from Musudan-ri, Hwadae County,” it quoted a diplomatic source as saying.

Musudan-ri on the northeast coast is the North’s major missile launch site. The North fired a long-range Taepodong-2 rocket from there on April 5.

Again, this seems like an odd time.  The only thing I can figure is this happens to coincide with the Memorial Day holiday in the U.S.  Like their last major test, could it be they are trying to send a signal to the U.S. for some reason?