Turkish President Recep Tayyip Erdogan and his US counterpart Donald Trump agreed in a phone interview to meet next month in Washington to discuss the establishment of a "safe zone" in northern Syria.

The White House announced Sunday that US troops stationed in Syria will withdraw from the Turkish border because Turkey will "soon" implement a "long-planned operation" in northern Syria.

"Turkey will soon implement its long-planned operation in northern Syria," the White House said in a statement reporting on a telephone conversation between Donald Trump and his Turkish counterpart Recep Tayyip Erdogan. "US forces will not support or be involved in the operation and US forces, which have defeated ISIS's territorial caliphate, will no longer be in the immediate vicinity," said the White House.