Oneiromancy, a much-respected discipline at that time centered on the study of how dreams can be seen as giving the dreamer divine rights. In order to appreciate how such a study might relate the concerns of present-day diplomats, one needs to study information from two areas. One needs to listen to details about claims made by one Middle East leader, and one needs to learn about the teachings of a prominent religion.
Maybe the Oneirocritica of Artemidorus once served as bedside reading for one Middle East leader. That leader has claimed that he learned from a dream his purpose on this earth. He claims that he was meant to prepare the world for the coming of the 12th Imam.
Now where can one find information on the coming of the 12th Imam? Is it in the Oneirocritica of Artemidorus? No, the Oneirocritica of Artemidorus was written at least one thousand years before the first mention of the 12th Imam.
That long-awaited spiritual leader would, according to the Shia beliefs, fulfills a prophecy that is included in the Muslim Holy Book. According to that prophecy, the 11 Imams, the men who provided leadership to Muslims after the death of Mohammed, would eventually have a successor of equal rank. He would be a Muslim leader sent by God to help spread the Muslim Faith throughout the entire world.
In other words, the leader of one Middle East country has told his citizens that he must get them ready to help spread the Muslim Faith to all corners of the world. Many people in his country appear to believe him. Perhaps they have read just enough of the Oneirocritica of Artemidorus to encourage that belief.
In that series of books one can read about how to judge the claims of a diviner an interpreter of dreams. Such a judgment should be based on sex, age and status. The male leader making the present claim certainly has status, and with every day his age increases. Yet because Artemidorus has written several different books, one feels compelled to look in all of them for further proof of what this one leader has said.
Diplomats need to learn about divination, because of the approach taken by that one Middle Eastern leader. They could also benefit from a careful study of all the Muslim writings about the appearance of a 12th Imam. When combined with the writings of all religions about the coming of a "chosen one," the Muslim writings cast a slight shadow on the veracity of that leader's claims.
It is interesting that the Oneirocritica of Artemidorus, a book written before many of the written words about the coming of a future prophet could hold information of value to the diplomats who must deal with a leader who appears guided by his dreams. Especially when that dream concerns the coming of a prophet, a prophet such as the members of the ancient Greek society never included in their religious doctrine.