Bashar Al Assad already gave up the idea, better stop dreaming.
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The eventual solution was somewhat original. Instead of formally and openly recognizing the border separating Hatay from Syria, the border was to be blurred and thereby lose its importance. A free-trade area was established on the border, and a shared Syria-Turkey Friendship Dam was to be constructed on the Orontes River, which runs through from Syria into the Hatay area. While Syria had long refused to include the Orontes in Syrian-Turkish negotiations on water allocations on the grounds that it was not an international river—a clear rejection of the border separating Hatay from Syria, across which the river flows—
Damascus finally agreed to specify national jurisdiction on both sides of the dam. It thereby effectively, albeit indirectly, recognized Turkish sovereignty over Hatay.
Syria’s “Lost Province”: The Hatay Question Returns - Syria in Crisis - Carnegie Endowment for International Peace