It would appear my fears are realized!
Direct action is the only solution. I want you to go to the southern Anubian camp along the Windswept Coast and kill Spymaster Usi and his cohorts.
It is likely the the Outcast's resolve will weaken and the proposed alliance will crumble with the death of Usi and his ilk.
Now be off! There is precious little time!
Very impressive. Usi was a tough character.
Well done!