In Othello what impending crisis do the duke and his senators face at beginning of scene 3?

In Act 1, Scene 3 of Othello, the Duke and his senators face an impending crisis involving the threat of a Turkish invasion of Cyprus.

Here's the breakdown:

* The Setting: The play opens with a tense atmosphere. The Duke and senators are gathered to discuss the imminent threat posed by the Turkish fleet, which is poised to attack Cyprus.

* The Stakes: The invasion could lead to the loss of Cyprus, a strategically important island for Venice.

* The Solution: The Duke sends Othello, a highly skilled general, to Cyprus with a Venetian army to defend the island.

The impending crisis sets the stage for the play's main conflict, which unfolds through Othello's jealousy and the machinations of Iago.