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Nathasil
Chapter 1 of Before the Storm ends with Anduin telling Shaw to get his Best People to Silithus. Which is the PC.
Chapter 3 of Before the Storm ends with Sylvanas talking to Gallywix and it's assumed that at some point -after- that she tells Nathanos to send the Horde PC down to Silithus.
The Alliance PC gets to Silithus and starts murdering goblin miners to steal Azerite from their corpses before the Horde Player even talks to Nathanos.
As to the "Spies versus Miners" argument: Spies are COMBATANTS according to the literal rules of warfare that exist. Miners would be civilian laborers. Attacking one of those two is a War Crime, while the other is part of fighting battles. I'll let you guess which one.