How does Iago act as a dramatist (perhaps a surrogate for a malign Shakespeare?), stage-managing situations so that the events around Othello seem to confirm his suspicions about Desdemona’s infidelity?
We will examine the source of Iago’s power of manipulation: his tactic of stage-managing a conflict, then using the very incident he has stage-managed to make his lies to Othello seem like well-established truths.
Opening scene with Brabantio
Iago sets up Cassio’s petition to Desdemona to restore him to office
Iago sets up the scene with Cassio and the handkerchief