"Othello" is a tragedy written by William Shakespeare in the early 1600s. The play tells the story of Othello, a Moorish general in the Venetian army, and his downfall due to jealousy and manipulation.

At the beginning of the play, Othello has just married Desdemona, a young Venetian woman, against the wishes of her father. Iago, Othello's ensign and trusted advisor, becomes jealous of Cassio, a young and handsome lieutenant who has just been promoted over him. Iago decides to use Othello's trust in him to plant seeds of doubt about Cassio's loyalty and Desdemona's faithfulness.

Iago manipulates several characters, including Othello, Cassio, and Roderigo, a wealthy suitor of Desdemona, to further his own goals. He convinces Othello that Desdemona is having an affair with Cassio and provides false evidence to support his claim. Othello becomes consumed by jealousy and rage, and eventually kills Desdemona in a fit of passion.

In the end, Iago's schemes are revealed, and Othello realizes that he has been tricked. He kills himself in despair, and Iago is arrested and brought to justice for his crimes.

The play explores themes of jealousy, deception, racism, and the destructive power of unchecked emotions. It is known for its complex characters, powerful language, and tragic ending.