Mattia Bertolini, Raffaele Minicozzi, Tim Sweijs, HCSS, April 2023
				12
				Oct
				2023
			
		Mattia Bertolini, Raffaele Minicozzi, Tim Sweijs, HCSS, April 2023
Tõnis Idarand, Analysis, International Centre for Defense and Security, February 2023
Len Scott, R. Gerald Hugues, Martin Alexander (Ed.), special issue of Intelligence and National Security, Routledge, 184p., October 2010