 Complete the following phrase:  Diplomatic rapports with other Mediterranean countries, both Muslim and Christian, continued. Unlike earlier Hafsids, Uthman remained largely uninterested in the security of the beleaguered Emirate of Granada, although friendly contacts between the two continued. He also maintained ties with the Mamluks, a traditional friend, and established new ones with the Ottomans, sending a mission in 1454 to congratulate the sultan Mehmed II for his 