Question: what are the key events in othello?
Answer: Resentment and redress (Act 1, Scene 1) ... 
Talk of love and war in Venice (Act 1 Scene 3) ... 
Cassio carouses in Cyprus (Act 2 Scene 3) ... 
“The green-eyed monster” jealousy is aroused (Act 3 Scene 3) ... 
Othello receives 'proof' of his wife's infidelity (Act 4 Scene 1) ... 
A deadly attack on Cassio (Act 5 Scene 1)