The main subject of interest of this paper is the current situation and the trend of international terrorism in the European Union, explained through security analysis of the committed terrorist attacks and their influence on the European security and stability. Also, it will be shown the measures and the activities of the anti and contrary terroristic fight against the risks and the threats from the terrorism as a result of the recent terroristic attacks. Even though on international level there isn’t a common definition of the terrorism as a criminal act, the European Union and the Council of Europe through their most important documents set the concept for terrorism which has helped in the process of creating national security systems fo...