 The two sides initially failed to make any headway, with the US initially offering a -deep zone under joint US-Turkish control, while Turkey demanded a -deep zone under sole Turkish control.On 7 August 2019, Turkey said it reached a framework deal with the United States, that would prevent a unilateral Turkish invasion of northern Syria.The initial first steps reportedly included the creation of a 'joint operations centre', which would coordinate the establishment of a "peace corridor" along the Syrian side of the Syrian-Turkish border, while still leaving details about the size and scope of the "peace corridor" undefined and ambiguous.