For John, BLUF: There are going to be more terrorist events in Russia in the runup to the Olympics this year. Nothing to see here; just move along.
From Canada we have a CTV News analysis of the bombing of a train station in Russia on Sunday, the 29th of December.♠ The analyst is Professor Christopher Swift, from Georgetown University. Here is the video.♥
I found this item on "Linked In", a professional networking on-line presence.
Regards — Cliff
♠ The CNN report says "massive explosion". I don't think of a reported 10 kilos (22.2 pounds) of plastic as "massive", but that is just me.
♥ There is a 30 second advert on the front end. This is, after all, a private operation up there in Canada.