ABSTRACT
It can therefore be concluded that counter-terrorism had twice a major shaping influence on EU internal security governance: the first time in the 1970s when it was at the origin of the establishment of the lose intergovernmental cooperation of the time and the second time after the 9/11 attacks when it became the main driving factor of legislative action, further institutionalization and externalization of internal security governance. However, each time this decisive influence proved to be temporary, depending heavily on the evolution of terrorist threat perceptions.
