Radicalisation is a process of endorsing an extremist ideology whilst internally legitimising the use of violence as a means to achieve political, ideological or religious aims. Both individuals and social groups may be vulnerable and radicalisation may affect all types of social structures.

Terrorism and violent extremism is not an exclusive trait of centralised and hierarchical groups. This threat has gradually evolved and it henceforth involves smaller groups, cells and individuals who act in unpredictable ways.

Greek society has faced this phenomenon for a number of years. More recently - and even today – a variety of conditions and events have contributed towards the radicalisation of individuals and social groups.

At the same time, Greece as a state-member of the European Union but also due to its geographical location close to the Middle East and North Africa, is affected directly by terrorist activities in the area. The phenomenon of ‘foreign fighters’ is not new, however, their increasing numbers also entail an increased level of threat for the security of EU countries. The return of these ‘fighters’ from the conflict zones to Europe could have direct implications for security, but it could also act as a catalyst for the radicalisation of certain social groups.