The United Nations were founded inter alia with the idea of maintaining international peace and security in 1945. One of their main tasks during the past decades has become the fight against terrorism and disarmament while human rights are highly emphasised. Terrorism poses a real andserious threat to the security and safety of innocent citizens who are hardly able to protect themselves. Therefore countering this scourge by systematic and worldwide protection is in the interest of all mankind.Documents show how the United Nations and its Member States face international terrorism. Fourteen instruments and four amendments havebeen released in order to protect human security and peaceful coexistence of all nations. Emphasis has been laid also on raising Member States awareness of terrorist threats by coordinating their counter-terrorism efforts and creating a common legal framework, especially through the General Assembly. The Security Council takes also part of the responsibility in the fight against terrorism by releasing and spreading resolutions. Moreover, the establishment of several subsidiary bodies with focus on that particular issue as well as various other programmes, offices and agencies of the United Nations system assist Member States in specific anti-terrorism activities.