The perception of intelligence as power has intensified during the Second World War, when several intelligence agencies has been formalized and significantly increased. In all countries, new agencies and departments have been set up to deal with threats. Government publications in developed countries, following the September 11, 2001 attack, reflected a consensus that intelligence services are key to preventing mass attacks, spending huge amounts for the intelligence agencies that are considered a major component of national security systems. DOI: 10.13140/RG.2.2.16398.20809.