According to Nathalie Tocci, Special Adviser to EU HRVP Federica Mogherini, terrorist attacks in Europe increase the level of fear in society, but they also change Europeans’ hearts and minds about what to do together. The time of Europeans living and fighting terrorism separately is over. Security becomes a major concern of European citizens. And the way toward stronger security lies in a united Europe. Member states cannot deal with such issues on their own. There is a real desire to act together that did not exist in the past.