The Tigris and the Euphrates rivers have always been important to civilization. These two rivers cross through the ancient area of Mesopotamia, which is considered the "cradle of civilization."
However, nowadays, the rivers cross international boundaries. This has become an important problem for the region. The fact that the rivers cross boundaries means that it becomes difficult to establish who has the right to make use of the river. Moreover, this also means that it is difficult to decide who is responsible for damage or pollution to such rivers.