Iraq: Yes. The Tigris and Euphrates are affected by the Southeastern Anatolia project.

Iran: No. There is no major Iranian river that has sources in Turkey.

No. They both are in Turkey but they are in different regions. Çayönü is in city of Diyarbakır which at southeastern Anatolia , Çatalhöyük in city of Konya, at the central Anatolia

Yes. The southeastern part of Anatolia runs along the Mediterranean Sea.

The three Neolithic towns are located in Turkey: Çatalhöyük, Göbekli Tepe, and Çayönü. Çatalhöyük is one of the earliest known settlements and is located in central Anatolia. Göbekli Tepe is an ancient temple site located in southeastern Anatolia. Çayönü is another early settlement located in southeastern Anatolia.

Anatolia