What should I ask Chris Blattman?

I will be having a Conversation with him, rooted in his forthcoming book Why We Fight: The Roots of War and the Paths to Peace.  Though not only!

Chris is a political scientist at University of Chicago, but with training in other fields as well and indeed he is also an economist.  He has done extensive fieldwork in Colombia and East Africa, both on conflict and also on cash transfers.  He is active blogging and tweeting, and is a Canadian too.

Here is my previous Conversation with Chris.  So what should I ask him this time around?