The article focuses on the impact that the metamorphosis and amplification of terrorism has on the European Union. Based on a mixed methodology, both qualitative and quantitative, we have analysed the response capacity of the European Union, which was forced to revise its anti-terrorist policy, and to adopt multiple solutions - some direct, radical and assertive, and other indirect, consisting of strategies to harmonize of social and international relations. This article emphasizes the pressure of the multifaceted crisis, represented by the multiplication of terrorist attacks in Europe, the radicalization among young Europeans and the refugee crisis, under which the European Union has to survive. So we were surprised to find out that the EU is facing with a dilemma - to adopt solutions that must respond simultaneously to the security and freedom and rights of the European citizens. In the context of recent events during 2015-2016 it became clear that the EU must coordinate and jointly fight against global terrorism, and to redefine cooperation with international actors, especially with the Russian Federation, which plays a key role in this area of counter-terrorism.