In 1595 BC, Mursili I conducted a great raid down the Euphrates River, bypassing Assyria, and captured Mari and Babylonia, ejecting the Amorite founders of the Babylonian state in the process. However, internal dissension forced a withdrawal of troops to the Hittite homelands. Throughout the remainder of the 16th century BC, the Hittite kings were held to their homelands by dynastic quarrels and warfare with the Hurrians—their neighbours to the east. Also the campaigns into Amurru (modern Syria) and southern Mesopotamia may be responsible for the reintroduction of cuneiform writing into Anatolia, since the Hittite script is quite different from that of the preceding Assyrian Colonial period.