Here’s a quick role play exercise that takes about 5 minutes and zero preparation. Announce to the class that Dr. X down the hall (pick any faculty member, preferably someone they might know or who seems completely non-threatening) has just run into the classroom and randomly tried to tackle a member of the class. Then ask them what they plan to do about it. If they hesitate, you can start giving a play by play of what’s going on, and then prompt them again to see if someone is going to intervene. Usually at this point if not sooner, a student or two announce that they will tackle Dr. X; others might offer to hold him/her down or kick them. You can continue storytelling–maybe the first tackler gets roughed up a bit. Once five or six students have announced their actions, however, offers dry up as the threat seems to be handled. Then start quizzing the students who were not quick to act on why–you will get a range of reasons, but at least one student will note that their efforts weren’t necessary.
That is, of course, your in to start a discussion about collective security and the problem of free-riding. Their willingness to allow other students to handle the threat is exactly the kind of behavior we predict amongst sovereign states in a collective security arrangement, where as long as the threat is handled it is in no single state’s interest to expend the resources for that purpose.
I use this exercise whenever I discuss collective security; usually this is in the context of discussing the League of Nations and why it failed. Its useful because it is very quick, requires no preparation for faculty or students, and is very effective in making the point. As an ‘organic’ simulation (see Kollars and Rosen 2013), it allows students to show the truth and practice of the theory through their own actions before studying it formally–thus making them more likely to understand and accept the theory. Plus, Dr. X can become a villain for the rest of the course, and you can constantly reference him/her whenever you need to discuss ‘threats’ to state systems.