Othello:   Not I. I must be found
 My parts, my title, and my perfect soul
 Shall manifest me rightly, is it they?

Iago:  By Janus, I think so

Othello:   The servants of the Duke? And my Lieutenant?
 The goodness of the night upon you, friends
 What is the news?

 (Act 1, Scene Two, Lines 29 - 34)

Duke is in council that night because of_____________