Does a repeated statement made with the intention of threatening, such as "When we travel to Egypt, I will divorce you while we are at Cairo Airport," constitute a divorce?

Your statement to your wife, "I will divorce you at Cairo Airport," is a threat of future divorce, and divorce does not occur unless you actually pronounce it. However, if you intended to make the divorce contingent upon reaching the airport, meaning "if we reach Cairo Airport, then you are divorced," then the divorce occurs upon the fulfillment of the condition. One must be careful not to use words of divorce during anger.