Mosul is a major city in northern Iraq, serving as the capital of Nineveh Governorate. The city is considered the second-largest city in Iraq in terms of population and area after the capital Baghdad. Mosul is approximately 400 km (250 mi) north of Baghdad on the Tigris river. The Mosul metropolitan area has grown from the old city on the western side to encompass substantial areas on both the "Left Bank" and the "Right Bank", as locals call the two riverbanks. Mosul encloses the ruins of the ancient Assyrian city of Nineveh – once the largest city in the world – on its east side.

Assyrians are an indigenous ethnic group native to Mesopotamia, a geographical region in West Asia. Modern Assyrians descend directly from Ancient Mesopotamians such as ancient Assyrians and Babylonians. Modern Assyrians may culturally self-identify as Syriacs, Chaldeans, or Arameans for religious, geographic, and tribal identification.