I get it that a strike from N. Korea would be horrid.  But, just because they're testing and Kim's a blow hard doesn't mean he's actually going to do something.  I remember Hussein's tough talk...and it all turned out to be talk.  The guy didn't have that super gun he claimed (back in the 1980's).  His Republican Guard was giving up to supply troops in Desert Storm.  Many dictators are full of it.  Kim may turn out to be just another one of those.  Or, he might be nuts enough to actually try something, but I'd bet there are some around him who would either put him on a short leash or even take him out.  C'mon...a nuclear strike would have at minimum us coming down on him with full support of the big two (China and Russia), or maybe even China jumping in to floor him.