1. The jealousy, as the audience are able to see how jealousy causes Ensign(or whoever he is in Othello) to manipulate other characters and how other characters fell into his plan because of their misinterpration of each other. This is a dramatic sarcasm.
2. He will suicide. There is no enough reason for Ensign to kill him and it would be a boring story if he got excecuted.
2. He will suicide. There is no enough reason for Ensign to kill him and it would be a boring story if he got excecuted.