Yemeni diaspora ancestors having left Yemen for the Indian subcontinent and Southeast Asia over four centuries ago. In 2015, due to the conflict in Yemen, many have migrated to the northern coasts of Djibouti and Somalia. Almost 350,000 Yemenite Jews live in Israel. Yemenite Jews have a unique religious tradition that marks them out as separate from Ashkenazi, Sephardi and other Jewish groups. Yemenite Jews are generally described as belonging to "Mizrahi Jews", though they differ from the general trend of Mizrahi groups in Israel, which have undergone a process of total or partial assimilation to Sephardic culture and Sephardic liturgy. Avigdor
Ashkenazi Hebrew from Spain in 1492 (or before) the Sephardic pronunciation of the vowels became standard in all these countries, ironing out any differences that previously existed. This makes it harder to adjudicate between the different theories on the relationship between today's pronunciation systems and those of ancient times. Leopold Zunz believed that the Ashkenazi pronunciation was derived from that of Palestine in Geonic times (7th–11th centuries CE), while the Sephardi pronunciation was derived from that of Babylonia. This theory was supported by the fact that, in some respects, Ashkenazi Hebrew resembles the western dialect of Syriac while Sephardi Hebrew resembles the