Under Abd al-Malik's son and successor al-Walid I () the Umayyad Caliphate reached its greatest territorial extent. The war with the Byzantines had resumed under Abd al-Malik after the civil war, with the Umayyads defeating the Byzantines at the Battle of Sebastopolis in 692. The Umayyads launched constant raids against Byzantine Anatolia and Armenia in the following years. By 705, Armenia was annexed by the Caliphate along with the principalities of Caucasian Albania and Iberia, which collectively became the province of Arminiya. In 695–698 the commander Hassan ibn al-Nu'man al-Ghassani restored Umayyad control over Ifriqiya after defeating the Byzantines and Berbers there. Carthage was captured and destroyed in 698, signaling "the final, irretrievable end of Roman power in Africa", according to Kennedy. Kairouan was firmly secured as a launchpad for later conquests, while the port town of Tunis was founded and equipped with an arsenal on Abd al-Malik's orders to establish a strong Arab fleet. Hassan al-Nu'man continued the campaign against the Berbers, defeating them and killing their leader, the warrior queen al-Kahina, between 698 and 703. His successor in Ifriqiya, Musa ibn Nusayr, subjugated the Berbers of the Hawwara, Zenata and Kutama confederations and advanced into the Maghreb (western North Africa), conquering Tangier and Sus in 708/09. Musa's Berber "mawla", Tariq ibn Ziyad, invaded the Visigothic Kingdom of Hispania (the Iberian Peninsula) in 711 and within five years most of Hispania was conquered.