 He had negotiated with the Duke of Savoy to have the citadel of Nice placed at his disposal, to which the Duke had agreed; the Duke, however, did not carry out his commitment out of fear of what the French or the Spanish might attempt.The war was finally settled by The Truce of Nice, signed on 18 June 1538 by Francis I and Charles V, through the mediation of Pope Paul III.Cardinal de Tournon was appointed Archbishop of Auch on 14 June 1538.