In the security literature, CBRN Terrorism, whose English abbreviation is ""CBRN (Chemical, Biological, Radiological and Nuclear)""; It is defined as the use of chemical, biological, radiological and nuclear agents in order to undermine the trust of the society, the state and the current political power by creating an environment of fear and confusion to realize their illegal strategic, ideological and political goals. Sources: ""Risk Assessment in CBRN Terrorism"", Ali Ekşi, 2016

A Bomb Vehicle is a vehicle that allows an attack with a bomb mechanism placed in a vehicle. The add-on vehicle loaded into the vehicle transforms the explosive vehicle into a weapon. It is basically built on the basis of the explosive itself and reaching its target. In bomb vehicle attacks, an attempt is made to provide a psychological superiority. It is aimed to reduce the stability provided in security environments and to create a psychological effect on public order. Car bomb attacks also have a great impact on reducing security operations if they are successful. Source: SETA

It is an attack carried out using the properties of chemical substances that have toxic properties. These substances, known as chemical warfare agents, are used for various purposes. It is used for many purposes, such as killing,neutralizing, creating an environment of chaos and panic. This type of attack is used against specific targets and includes chemicals of various structures with high toxicity potential. Source: MEDAK

In the security literature; ""a toxic effect that has toxic effects on humans, animals or plants It is defined as a type of terrorism in which chemical agents created with gases, liquids or solids or weapons created with these substances are used. Chemical weapons are weapons of mass destruction. A greater effect is revealed when compared with conventional weapons. Compared to nuclear weapons, they are less costly and easier to manufacture. For this reason, it is described as the "atomic bomb of the poor". Sources: "Chemical Warfare Agents: Their History, Toxicity, Detection and Preparedness", Pınar Erkekoğlu, Belma Koçer Gümüşel, 2018

A chemical weapon is a type of weapon used to take advantage of the destructive/irritating effects of chemical substances on the target. Chemical weapons that can be aimed at the target with primitive tools such as arrows or catapults or advanced means of delivery such as artillery shells, rockets or ballistic missiles contain toxic chemicals that can cause death, injury, weakness and sensory irritation. Chemical weapons are considered as weapons of mass destruction because of their destructive ability and their use in armed conflicts is a violation of international law. Primary forms of chemical weapons include nerve agents, blister agents, suffocating agents, and blood agents. These agents are categorized according to how they affect the human body. The Chemical Weapons Convention, which entered into force in 1997, prohibited the production, use and possession of chemical weapons. However, some countries continue to maintain active chemical weapons programs despite the prevailing norm against the use of chemical weapons and international efforts to destroy existing stockpiles.