HYBRID THREATS - A STRATEGIC COMMUNICATIONS PERSPECTIVE - Aday, Sean; Andžāns, Māris; Bērziņa-Čerenkova, Una; Granelli, Francesca; Gravelines, John-Paul; Hills, Mils; Holmstrom, Miranda; Klus, Adam; Martinez-Sanchez, Irene; Mattiisen, Mariita; Mölder, Holger; Morakabati, Yeganeh; et al. (NATO Strategic Communications Centre of Excellence, 2019)