Water politics in the Middle East deals with control of the water resources of the Middle East, an arid region where issues of the use, supply, control, and allocation of water are of central economic importance. Politically contested watersheds include the Tigris–Euphrates river system which drains to the south-east through Iraq into the Persian Gulf, the Nile basin which drains northward through Egypt into the eastern Mediterranean Sea, and the Jordan River basin which flows into the Dead Sea (400 m below sea level), a land-locked and highly saline sea bordered by Jordan to the east and Israel to the west.