US President Donald Trump says that some US troops remain in Syria, despite calling for their withdrawal.
He said a small number would protect oil fields while others would remain near Israel and Jordan.
His decision two weeks ago to withdraw US forces from the Syrian-Turkish border region has even met with criticism from some of his followers.
Soon after, Turkey launched an offensive against former US allies, the Kurds.
The US President again defended his decision to withdraw Islamic State Group.
"Why should we put our soldiers in two large groups, potentially hundreds of thousands of people who are fighting? I do not think so," he said. "I was elected because I wanted to bring our soldiers home."
- Who are the Kurds?
- People trapped in the middle of northern Syria
But Mr. Trump also said that the US had been invited by Israel and Jordan to leave a small number of troops behind in "a completely different part of Syria."
In another part of the country, US forces are needed to "secure the oil."
Around 200,000 US troops are stationed in conflict areas around the world, although Trump has promised to bring them home.
The number of US troops in the Gulf has reportedly increased by 1
Earlier this month, the Pentagon announced that about 3,000 American troops had been deployed to "improve the defense of Saudi Arabia."
Turkey attacked Kurdish-led armed forces in Syria to drive them out of northern Syria and create a "safe zone" for the relocation of up to two million Syrian refugees in Turkey.
Up to 300,000 people have fled their homes since the beginning of the fighting.
A ceasefire is currently expected to allow the withdrawal of Kurdish-led troops from the area, but is due to expire on Tuesday at 22:00 local time (19:00 GMT).
Mr. Trump has not ruled out the possibility of an extension.