agreed to show respect to the Ottoman sultan and in return he was left alone. The embassy nearly failed to reach Istanbul due to the opposition of Uluç (later known as Kılıç Ali Paşa), the Ottoman Grand Admiral in Algiers who hoped to have Morocco invaded and incorporated into Ottoman Algeria's sphere of influence. In 1582, al-Mansur was also forced to agree to a special Ottoman “protection” over Morocco and to pay a certain tribute in order to stop the attacks from Algerian corsairs on the Moroccan coast and on Moroccan ships. In 1583, the Saadian and Ottoman sultans even tentatively discussed a joint military operation against the Spanish in Oran. Al-Mansur enjoyed peaceful relations with the Ottoman Empire afterwards and respected its sovereignty, but also played the Ottomans and European powers against each other and issued propaganda that undermined the Ottoman sultan's claim as leader of all Muslims. He continued to send a payment to Istanbul every year, which the Saadians interpreted as a "gift" to the Ottomans while the Ottomans considered it a "tribute". In 1587 Uluç died and a change in the Ottoman administration in Algiers limited the power of its governors. After this, tensions between the two states further decreased, while the Saadian government further stabilized and its independence became more entrenched. Al-Mansur even felt confident enough after 1587 to drop his regular payments to Murad III. Despite the limits of his power, he officially proclaimed himself caliph in the later part of his reign, seeing himself as rival, rather than subordinate, of the Ottomans, and even as the rightful leader of the Muslim world. Conquests Annexation of Saharan oases In 1583 after the dispatch of al-Mansur led by the commander Abu Abdullah Muhammad bin Baraka and Abu Al-Abbas Ahmed Ibn Al-Haddad Al-Omari. The march of the army began from Marrakesh, and they arrived after 70 days, where they initially called for obedience and warning, after the tribal elders refused to comply, the war began. The annexed territories contained Tuat, Jouda, Tamantit, Tabelbala, Ourgla, Tsabit, Tekorareen, and others. Annexation of Chinguetti The Saadians repeatedly tried to control Chinguetti, and the most prominent attempts were made during the reign of Sultan Muhammad al-Shaykh, but control of it did not come until the reign of Ahmed al-Mansur, who stripped a campaign in 1584 led by Muhammad bin Salem in which he managed to seize control of Chinguetti, modern