In a recent post, I noted that 2013 had distinguished itself in a dismal way, by producing more new episodes of mass killing than any other year since the early 1990s. Now let’s talk about why.

Each of these mass killings surely involves some unique and specific local processes, and people who study in depth the societies where mass killings are occurring can say much better than I what those are. As someone who believes local politics is always embedded in a global system, however, I don’t think we can fully understand these situations by considering only those idiosyncratic features, either. Sometimes we see “clusters” where they aren’t, but evidence that we live in a global system leads me to think that isn’t what’s happening here.

To fully understand why a spate of mass killings is happening now, I think it helps to recognize that this cluster is occurring alongside—or, in some cases, in concert with—a spate of state collapses and during a period of unusually high social unrest. Systemic thinking leads me to believe that these processes are interrelated in explicable ways.

Just as there are boom and bust cycles within economies, there seem to be cycles of political (dis)order in the global political economy, too. Economic crunches help spur popular unrest. Economic crunches are often regional or global in nature, and unrest can inspire imitation. These reverberating challenges can shove open doors to institutional change, but they also tend to inspire harsh responses from incumbents intent on preserving the status quo ante. The ensuing clashes present exactly the conditions that are ripest for mass killing. Foreign governments react to these clashes in various ways, sometimes to try to quell the conflict and sometimes to back a favored side. These reactions often beget further reactions, however, and efforts to manufacture a resolution can end up catalyzing wider disorder instead.

In hindsight, I don’t think it’s an accident that the last phase of comparable disorder—the early 1990s—produced two iconic yet seemingly contradictory pieces of writing on political order: Francis Fukuyama’s The End of History and the Last Man, and Robert Kaplan’s “The Coming Anarchy.” A similar dynamic seems to be happening now. Periods of heightened disorder bring heightened uncertainty, with many possibilities both good and bad. All good things do not necessarily arrive together, and the disruptions that are producing some encouraging changes in political institutions at the national and global levels also open the door to horrifying violence.

Of course, in political terms, calendar years are an entirely arbitrary delineation of time. The mass killings I called out in that earlier post weren’t all new in 2013, and the processes generating them don’t reset with the arrival of a new year. In light of the intensification and spread of the now-regional war in Syria; escalating civil wars in Pakistan, Iraq, and Afghanistan; China’s increasingly precarious condition; and the persistence of economic malaise in Europe, among other things, I think there’s a good chance that we still haven’t reached the peak of the current phase of global disorder. And, on mass killing in particular, I suspect that the persistence of this phase will probably continue to produce new episodes at a faster rate than we saw in the previous 20 years.

That’s the bad news. The slightly better news is that, while we (humanity) still aren’t nearly as effective at preventing mass killings as we’d like to be, there are signs that we’re getting better at it. In a recent post on United to End Genocide’s blog, Daniel Sullivan noted “five successes in genocide prevention in 2013,” and I think his list is a good one. Political scientist Bear Braumoeller encourages us to think of the structure of the international system as distributions of features deemed important by the major actors in it. Refracting Sullivan’s post through that lens, we can see how changes in the global distribution of political regime types, of formal and informal interdependencies among states, of ideas about atrocities prevention, and of organizations devoted to advocating for that cause seem to be enabling changes in responses to these episodes that are helping to stop or slow some of them sooner, making them somewhat less deadly on the whole.

The Central African Republic is a telling example. Attacks and clashes there have probably killed thousands over the past year, and even with deeper foreign intervention, the fighting hasn’t yet stopped. Still, in light of the reports we were receiving from people on the scene in early December (see here and here, for example), it’s easy to imagine this situation having spiraled much further downward already, had French forces and additional international assistance not arrived when they did. A similar process may be occurring now in South Sudan. Both cases already involve terrible violence on a large scale, but we should also acknowledge that both could have become much worse—and very likely will, if the braking efforts underway are not sustained or even intensified.