“…First, natural 3 Natural resources have also been found to empirically matter for homicides (Couttenier, Grosjean, and Sangnier forthcoming), for organized crime (Buonanno et al 2015), for interstate wars (Caselli, Morelli, and Rohner 2015), and for mass killings of civilians (Esteban, Morelli, and Rohner 2015). 4 See De Soysa (2002), Fearon and Laitin (2003), Ross (2004Ross ( , 2006, Fearon (2005), and Humphreys (2005) in the case of oil; Lujala, Gleditsch, and Gilmore (2005), Humphreys (2005), Ross, (2006), and Lujala (2010) focusing on diamonds; and Angrist and Kugler (2008) and Lujala (2009) on narcotics.…”