I excitedly read this recent tweet by Evan Perkoski of UConn, about a new article he co-authored that has been accepted in International Organization. Beyond being glad for a colleague's success, I was excited by the substance of the publication. They produced a new dataset on violent non-state actors and analyzed the conditions under which they cooperated, finding a major role for both group ideology and religious identity. That is huge! Well-crafted data published in one of the top journals in the sub-field that found that religion drives a crucially important security issue. This should...