 Complete the following phrase:  Meanwhile, in North Africa, a ByzantineBerber alliance had reconquered Ifriqiya and slain its governor, Uqba ibn Nafi, in the Battle of Vescera in 682. Abd al-Malik charged Uqbas deputy, Zuhayr ibn Qays, to reassert the Arab position in 688, but after initial gains, including the slaying of the Berber ruler Kasila at the Battle of Mams, Zuhayr was driven back to Barqa Cyrenaica by Kasilas partisans and slain by Byzantine naval raiders. In 695, Abd al-Malik dispatched Hassan ibn al-Numan with a 40,000-strong army to retake Ifriqiya. Hassan captured Byzantine-held Kairouan, Carthage and Bizerte. With the aid of naval reinforcements sent by Emperor Leontios , the Byzantines recaptured Carthage by 69697. After the Byzantines were repelled, 