Walter Dorn teaches military officers and is a devoted peace worker. He tells Metta about the new addendum to the Chemical Weapons Convention, which specifies Novichok as one of the forbidden chemical weapons. Everyone already knows that it is prohibited, but this added provision will make it easier for the OPCW to investigate alleged breaches. We speculate on the intentions behind Putin's apparent choice of this agent: Is it meant to be detected just to send a warning to others?