The Neo-Assyrian Empire begins with the accession of Adad-nirari II in 911 BCE. He drove Aramean tribes from Assyrian territory in Tur-Abdin, the Khabur Delta, Jazirah, the Kashiari mountains, Amid (modern Diyarbakir) and Mérida (modern Mardin) thus securing the borders of Assyria proper.[citation needed]