I bet more than a million. Mustard gas is heavy, and runs downhill.
If I were a kenyan in hawaiian clothing, I would pull my fleet away and start running bomber patrols. Massive pullout of ground forces too. At least on film. And use ABC to show footage of it to the world.
When rattling sabres, a claymore makes a more rubust clang...
Quickly send your plan to TOTUS so the world can be saved.