The announcement came shortly after Turkish President Recep Tayyip Erdogan said that Ankara would kick off a military air and ground operation east of the Euphrates river in Syria in the coming days.

The United States will not support Turkey in its operation in Northern Syria, the White House announced after phone talks between US President Donald Trump and his Turkish counterpart Recep Tayyip Erdogan.

"Today, President Donald J. Trump spoke with President Recep Tayyip Erdogan of Turkey by telephone. Turkey will soon be moving forward with its long-planned operation into Northern Syria. The United States Armed Forces will not support or be involved in the operation, and United States forces, having defeated the ISIS territorial ‘Caliphate,’ will no longer be in the immediate area," the White House statement says.

According to Turkish presidential spokesman Ibrahim Kalin, Ankara will create a safe zone in Syria to exterminate terrorists and ensure the safe return of the refugees to their homeland.

On Saturday, Turkish President Recep Tayyip Erdogan said that Ankara was planning to launch an operation in northern Syria east of the Euphrates River in the coming days. According to him, the purpose of the operation is to clear the Syrian border with Turkey from Kurdish militias, create a security zone and accommodate Syrian refugees there.

On August 7, Turkey and the United States agreed to create a safe zone in northern Syria after months of tensions between the two countries over the presence of Kurdish militia in the region.

Later in August, Erdogan warned that his country could launch a military operation against Kurdish forces in Syria to the east of the Euphrates River if the United States failed to meet Ankara's conditions for a safe zone.

The area to the east of the Euphrates is currently controlled by the self-defence forces, primarily comprised of the Kurdish militia, including the US-backed Kurdish People's Protection Units (YPG), which Ankara views as an affiliate of the Kurdistan Workers' Party (PKK), listed as a terrorist organisation in Turkey.

In December 2018, Erdogan announced that Turkey was ready to kick off a military operation against Kurdish militia on the eastern bank of the Euphrates River as well as in Syria's Manbij, located near the Turkish border if the United States did not remove the fighters from there.

Shortly thereafter, the Turkish president stated that he had decided to postpone the beginning of the operation following a phone conversation with Trump in mid-December, during which POTUS revealed his plans to pull out all Americans troops from Syria.

Turkey has long been opposed to the presence of Kurdish militia in the north of Syria, claiming that they posed a threat to the country's security. In January 2018, Turkey launched a military operation in the city of Afrin against the US-backed Kurdish People's Protection Units (YPG). The offensive was slammed as aggression by Damascus.