Follow RT for the latest breaking news on chemical weapons. A chemical weapon is any toxic substance produced to cause death, injury or temporary incapacitation. Read the information and news on RT about the structure of chemical weapons. They are classified as weapons of mass destruction. Chemical warfare is one of the most dangerous types of conflict today. Find articles on usage of chemical weapons in different parts of the world, as well as on possible damage to human beings and environment caused by them. There has been a number of conflicts related to use of chemical weapons. For instance, a number of Western countries claim that the Assad government used chemical weapons against its own citizens in Syria. Assad denies it. Visit RT.com for the news and updates on the Syria chemical weapons investigation.