I am pleased this year to be co-instructing the Canadian component of the Georgetown law school National Security Law Crisis Simulation, in a three way link-up between uOttawa, Georgetown and uPenn (fingers crossed on the technology). To facilitate that contribution, I have begun posting Canadian national security law "nutshell" podcasts of various topics as an iTunes podcast. Interested listeners may subscribe to that podcast here.
The podcasts are generally 10-20 minutes long -- very much nutshells to "scene set" for classroom discussions. (The topics are a bit of a buffet covering several of the topics in the Georgetown syllabus, and there is no mandatory order, but I generally assume listeners will listen in chronological order. I shall be adding podcasts periodically through to March.)
For other podcast and videocast series for the various courses I teach, see the podcast section of my main website.