when othello arrives, greets his wife, and announces that there will be celebration that evening to celebrate Cyprus’s safety from the Turks. once alone Roderigo goes to Iago to complain that there is no chance of of breaking up Othello's marriage. . Iago assures Roderigo that as soon as Desdemona loses interest in othello she will seek pleasure elsewhere because it is only natural. However, Iago tells him that he thinks that Desdemona likes Cassio. Iago convinces Roderigo that he should ruin cassios name by starting a fight with him at the party. In a soliloquy, Iago explains to the audience that taking Cassio out of the picture is the first crucial step in his plan to ruin Othello. on the night of the party, Iago gets Cassio drunk and then sends Roderigo to start a fight with him. Apparently provoked by Roderigo, Cassio chases Roderigo across the stage. Governor Montano attempts to hold Cassio down, and Cassio stabs him. Iago sends Roderigo to raise alarm in the town.