 Achille vents his rage at being used as a pawn by Agamemnon and vows to be avenged, while Iphigénie nobly rises to the defense of her father.Prevented from
entering the king's presence, Clytemnestre implores Achille to help, but Iphigénie prevails upon him to wait until Agamemnon is obliged to fetch her in person and is pierced by the extreme suffering of his wife and daughter.Act IV.