... messaging relate to a loss of group leaders Al Tamimi 2016 Jordan 2019 Winkler et al. 2019c , the fates of competing groups Winkler et al. 2019b , and changes in territorial control Milton, 2016 , 2018 Cunningham, Everton, and Schroeder 2017 Lakomy 2017 Winter, 2017 , 2018 Winter...