Terrorism has become part of our everyday life, it is unlikely that it will be completely eradicated. It remains the main threat not only for one country, but for the entire globe. It is inextricably linked with the civilization of the 21st century. Therefore, it is extremely important to be ready to attack. The fact that this phenomenon does not occur in a given country cannot be a guarantee of its security. On the contrary, terrorists very often choose new places, hit places where no one expects them. Participation in anti-terrorist coalitions and military alliances has its advantages and disadvantages, it can deter terrorists and be a bait for them. Membership in international organizations, in addition to the benefits of security guarantees, also carries the risk of aggression by hostile groups. However, neutrality is not a guarantee of security. Terrorism, which has an international scope, can be most effectively combated also through international cooperation.