Othello 2

The way Shakespeare writes is pretty confusing but I'm managing to understand it.  As I understand it, Iago is our antagonist and Othello is obviously our protagonist.  Iago is going behind everyones back so that he can get what he wants.  Everybody trusts him so they do not question him when he tells a lie. I am curious to see what happens to everyones acquaintanceship when all the lies are untangled.