An international conference on former Foreign Minister Prince Saud Al-Faisal will be held under the aegis of Custodian of the Two Holy Mosques King Salman. As many as 3,000 prominent figures, including 1,000 guests, will attend the conference titled "Saud Al-Awtan." The three-day event, whose date is yet to be finalized, will be organized by the King Faisal Center for Research and Islamic Studies, the Saudi Press Agency reported on Tuesday. The guests include 200 prominent international figures such as heads of state, ministers, heads of international organizations, intellectuals, thinkers and political analysts. The conference will shed light on the immense contributions rendered by the late prince to not only the Saudi and Arab diplomacy but to the international diplomacy as well, in addition to his major achievements. Prince Saud, who was Kingdom's foreign minister from Oct. 13, 1975, until April 29, 2015, became the world's longest serving foreign minister. He had worked under four Saudi kings – Khalid, Fahd, Abdullah and Salman. Several working sessions will discuss various aspects of the multifaceted personality of Prince Saud as well as the salient features of the Saudi diplomacy and major historic events that had taken place during his tenure.