"Arsenic and Old Mustard: Chemical Problems in the Destruction of Old Arsenical and 'Mustard' Munitions" is a technical book that addresses the challenges and chemical issues related to the disposal of old chemical warfare agents. In Europe, more than ten million pieces of chemical munitions, including shells and mortar bombs, from World War I are buried. Many of these remnants are corroded and difficult to identify, increasing the risk of their discovery during agricultural or construction work. The book explores various methods for identifying and destroying these hazardous materials and provides insights into Germany's chemical warfare programs during both World Wars, as well as the current state of Russian chemical armaments. It is a valuable resource for professionals dealing with the disposal of chemical warfare agents and the associated risks.