North Korea Rails Against New Sanctions. Whether They Will Work Is Unclear.

As a person that studied DPRK sanctions in the past, this new round will have the same effects as the old ones for three reasons: 1) These sanctions will have little effect on the upper echelon in North Korea's regime but will affect the people, just as they always have. 2) North Korea is one of the largest recipients and participants in Black Market activities and 3) Most importantly, the only reason any of this is happening at all is because South Korea is hosting the 2018 Winter Games. North Korea engaged in the same saber-rattling tactics, albeit not as aggressively, when China hosted the 2008 Summer Games