On: The cyanide tooth is a cold war fairy-tale (2018)

[akunsilva]

Step-by-step guide on usage by the most prolific users of cyanide at war: https://m.youtube.com/watch?v=OcyiM0zYNZ8&t=1980

At another point in the documentary it is mentioned that they fought a battle with the capsule in their mouth as they were very close to being taken by the enemy.