He ruled over an empire that, in modern times, extends from southeastern Turkey, Syria, Iraq, and Iran, through Central Asia encompassing part of Kazakhstan, Afghanistan, Armenia, Azerbaijan, Georgia, Turkmenistan, Uzbekistan, Kyrgyzstan, Pakistan, and even approaches Kashgar in China. The conquests of Timur are claimed to have caused the deaths of up to 17 million people; an assertion impossible to verify.[65] Timur's campaigns sometimes caused large and permanent demographic changes. Northern Iraq remained predominantly Assyrian Christian until attacked, looted, plundered and destroyed by Timur, leaving its population decimated by systematic mass slaughter.[66]