First of all it needs to be stated that despite the considerable amount of documents prohibiting terror, a single document referring to the notion of terror directly does not exist. However, the 1937 Treaty sets forth a framework determining the concept of terror. It is also worth noting that a freedom fighter of a country could be regarded as a terrorist in another country. On the other hand, states have the authority of counter-terrorism in order to protect their existence. What about the limitation of this counter-terrorism? Actually, many institutions are involved with this matter and it relates to international human rights law. A detailed definition of terror needs to be made and a framework of terror needs to be set in order to prevent the free movement of suspects involved in terror actions and also to delineate the limitations that states have to comply in counter-terrorism.