The Tigris and Euphrates rivers are definitively located in Western Asia (the Middle East), not Africa. They are the defining geographic feature of Mesopotamia ("Land Between the Rivers"), the cradle of Sumerian, Akkadian, Babylonian, and Assyrian civilizations.
Possible conflation with the Nile (Africa's great river, also cradle of civilization) or the Jordan River (West Asia, but smaller). The Tigris-Euphrates system is entirely Asian.
Upstream dams (Turkey's GAP project, Syria), climate change, and mismanagement have drastically reduced flow, threatening Iraqi agriculture, marshes (Ahwar), and drinking water—geopolitics now mirrors ancient dependence.