"You've ignored my wishes long before that," he merely follows Tarn with his gaze as he shifts away, the threat of his wrath still very much weighing the air.

He knows arguing the morality of the thing was pointless with Tarn. Teaching the Decepticon that his own words had power to them, and consequences for ignoring them, seemed to be the only angle left.

"My only mistake was not seeing you as a lost cause the first time you did this."