In a way it is no surprise. Three weeks ago, on the 11th, North Korea telegraphed the following that they were displeased and they were going to throw a tantrum. They start incrementally. So we can call the "projectiles", big deal, whatever, they get everyone's attention, violate the 9/19 treaty last year, but not enough to cause Trump to blow his stack. Though those who were in White House briefings today on this topic relate POTUS is "pissed. Like KJU had 'f''d him over." Other aides were keeping him from Twitter on it (you will notice he is quiet today so far, so he is restrained). When the Norks don't get what they want, they take it up another notch. Then it WILL go to short range missile, or maybe artillery barrage at Kalma Beach near Wonsan on the east side like before...then up another notch. Maybe diddling around at one of their sites where they know we can see them, acting like they are preparing an ICBM. They can and will have all kinds of fun, Kim learned this from his Dad. POTUS will NOT countenance this nonsense folks. Watch.
Anyways, back to what the Norks threatened last month:
As wind is bound to bring waves, the U.S. open hostile policy toward the DPRK will naturally bring our corresponding acts.”
Total of nine were in the barrage, in a 40 minute window. MRLS perhaps a new rocket design as well. Enough to cause problems with ROK and Japan, but not over the line with USA. Probably his initial move and escalate from there.