“One of poison’s great virtues for the politically minded murderer is their capa

—“One of poison’s great virtues for the politically minded murderer is their capacity to combine easy deniability and vicious theatricality. Even while the murderer denies any role, perhaps with a sly wink, the victim dies a horrific and often lengthy death. A message in a poison bottle,”—

—Mark Galeotti, the Royal United Services Institute