Lindsey Graham, US senator and top Trump alley has commented on the US president's statement, saying that "this is a disaster in the making".
He further elaborated that it would be "a stain on America's honour to abandon the Kurds".
The statement comes after Donald Trump stated that US troops should be pulled out of Syria.
Earlier in the day, Turkish President Recep Tayyip Erdogan confirmed that US troops began pulling out of North Syria, as Ankara plans to launch an anti-terrorist operation in the area.
In December last year, Trump announced that US troops would leave Syria as the Daesh terrorist group had been defeated there. Later on, US Secretary of State Mike Pompeo confirmed that Washington would withdraw its forces, adding that the United States would continue its campaign against terrorism.
The United States and its allies have been present in Syria since 2014, with their proclaimed mission goal being to fight the Daesh* terrorist group.
However, the US coalition has also reportedly been attacking military sites that belong to the Syrian government and supporting armed opposition groups.
*Daesh (also known as ISIS/ISIL/IS) is a terrorist group banned in Russia