How does iago weather this danger and still emerge looking good in othellos eyes

Iago looks intact in Othello's eyes until the end of the play. Until then, Iago works on Othello's insecurities and appears to be a loyal "friend" Iago knows Othello's insecurities over masculinity as well as his obsessive belief in absolutes: Desdemona is either an angel or a cheating whore. Iago works on Othello's doubt and is skilled in manipulation.