Historically, the region has shared empires and conquests by the Parthians, Achaemenids, Sassanians, Seljuks, Safavids, Afsharids, Ottomans, and Qajars. As a Persianate society, the Ottomans, in particular, were very heavily influenced by Persian culture. This historical legacy has persisted in modern Turkish culture. Iran and Turkey have long been at odds over conflicts such as those in Syria, Libya, and the Caucasus. However, they also have shared common interests in some instances, such as Kurdish separatism and the Qatar diplomatic crisis.