The struggle for control over Baghdad, the capital of the Abbasid Caliphate, among the Persians, Turks, and Buyids, weakened the Caliph’s authority. This led to the fragmentation of the Caliphate, giving rise to various local states and principalities. The Kurds capitalised on this situation, establishing their own authority and creating several Kurdish principalities. Several of these Kurdish principalities gained political and military influence, and emerged as strong states in the region. Notably, the Fatimids, Byzantines, and Romans sought to establish friendly relations with these Kurdish states, offering gifts, valuables, and titles to win their favour. This study delves into the internal and external relations of the Ḥasanwayhid Emirate during Badr ibn Ḥasanwayh’s reign. The methodology of this study is qualitative and historical analysis, depending on the selected primary and secondary sources. The most important finding of this study is that the Ḥasanwayhid Emirate had robust diplomatic relations with other authorities since its founding. Furthermore, the Buyids designated the emirs of the Ḥasanwayhid Emirate. Badr ibn Ḥasanwayh established and strengthened his authority and control over the rocky wilderness of the western region with his military might and support
