This map layer documents the number of non-military events—in five categories according to frequency—in which chemical warfare agents were used between 1970 and 2017.

Example of how to read the map:

From 1970 to 2017, there were four documented non-military cases in Venezuela where chemical warfare agents were used. In all of these incidents tear gas was used.


  • START (National Consortium for the Study of Terrorism and Responses to Terrorism)

    Since its launch in 2005, START at the University of Maryland has been tasked with using research theories, methods and data to improve the understanding of the origins, dynamics and social and psychological impacts of terrorism. Research questions are, amongst others, under which conditions persons or groups become radicalized, which targets are chosen for what reasons and which influence terrorism has on societies. The Consortium makes available a freely accessible database (Global Terrorism Database - GTD) that lists more than 150,000 terrorist attacks between 1970 and 2015. Information in the data set includes incident date, location, type of incident, type of weapon used, nature of victim, number of fatalities, injured and the perpetrator group.


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Data tables

For some select map layers, the information portal ‘War and Peace’ provides the user with all used data sets as tables.

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Country portraits

In the country reports, data and information are collected by country and put into tables that are used in the modules as a basis for maps and illustrations.

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Navigation and operation

The information and data of each module are primarily made available as selectable map layers and are complemented by texts and graphs. The map layers can be found on the right hand side and are listed according to themes and sub-themes.

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