In Act 1, Iago establishes his motivation for destroying Othello. What are his reasons?

Answer these 2 questions. These initial posts should be thoughtful and complete, about 150 words long for each question.
1. In Act 1, Iago establishes his motivation for destroying Othello. What are his reasons?
2. In Act 2, Iago demonstrates he is a master manipulator. Give specific examples of how he manipulates others for his own end.http://shakespeare.mit.edu/othello/full.html