Kurds in northern Syria have taken to the streets to plead with US soldiers pulling out of the war-torn region and leaving hundreds of thousands of people vulnerable to attacks by Turkey - as White House officials say President Donald Trump is considering a Pentagon plan that would keep some 200 troops in the area.

Some 700 American troops retreated from the largest US military base in the region over the weekend under orders from Trump.

The controversial pullout comes as Turkey ramps up its offensive on Kurdish allies who have fought against ISIS alongside US forces for years.

Since the offensive began on October 9, at least 114 civilians have been killed and some 300,000 people have been displaced.

A video by the Kurdish news agency posted Monday shows a convoy of armored vehicles driving through Qamishli and residents hurling abuse and potatoes at the soldiers as they withdrew.

Angry residents hurled potatoes at the vehicles, shouting 'No America' and 'America liar,' in English. One vehicle backed up over the sidewalk, trying to get away from the people.

Videos shared on social media also showed protesters attempting to block a 70-strong military convoy through Tal Tamr.

'Thanks for US people but Trump betrayed us,' one protester's sign read.

'To the US army who are leaving northeast Syria: Tell your children that the children of the Kurds were killed by the Turks and we did nothing to protect them,' another read.

One US Special Forces soldier made an apparent show of solidarity for Kurdish fighters by wearing a bright green patch bearing the letters YPJ - a symbol of the Syrian Kurdish Women's Protection Units.

The patches were banned by officials in 2016 after they inflamed tensions between the US and Turkey because the Kurdish YPJ militia, a key American ally against the Islamic State in Syria, is considered a terrorist group by the Turkish government.

Widespread outrage over the pullout appears to have caught Trump's attention as a senior White House official indicated on Sunday that the president may take a U-turn and keep troops in eastern Syria.

A US Special Forces soldier was seen wearing a banned Kurdish patch in an apparent show of solidarity for YPJ fighters in northern Syria as American troops abandoned a key military base

The soldier made a strong statement in wearing the patch as the 70-strong military convoy (pictured) retreated from Tal Tamr in northern Syria

Protesters blocked the path of US military convoys leaving the region on Sunday, begging them to stay. 'Thanks for US people but Trump betrayed us,' one protester's sign read

Another sign read: 'To the US army who are leaving northeast Syria: Tell your children that the children of the Kurds were killed by the Turks and we did nothing to protect them'

Trump announced the withdrawal of the majority of 1,000 troops stationed in northern Syria last week as Turkey advanced on Kurdish-held territory.

The president declared at the time that Washington had no stake in defending the Kurdish fighters who died by the thousands as America's partners fighting in Syria against ISIS extremists.

US and Turkish leaders hammered out a five-day ceasefire agreement late Thursday, under which Turkey gave the Syrian Democratic Forces, the de facto army of the Kurdish authorities in northeastern Syria, until Tuesday evening to withdraw from a 30-kilometer strip of Syrian land along its southern border.

Both sides have accused each other of violating the truce, which is set to expire Tuesday.

Trump's decision to withdraw troops was met with fierce criticism from former military leaders and politicians on both sides of the aisle as new reports indicate that the president is reconsidering the swift retreat.

A senior official in the Trump administration told the New York Times that the president is leaning in favor of a new Pentagon plan that would keep a small group of American troops in eastern Syria to combat the Islamic State.

If approved, the move would mark the second time in 10 months that Trump has reversed his order to pull troops out of Syria. He initially directed 2,000 American troops to leave the war-torn country in December, but later backtracked and approved a more gradual withdrawal.

The senior official told the Times that the troops would likely be stationed along the Iraqi border with Syria, away from the cease-fire zone negotiated with Turkish President Recep Tayyip Erdogan.

Trump announced the withdrawal of the majority of 1,000 troops stationed in northern Syria last week as Turkey advanced on Kurdish-held territory

On Sunday, a senior official in the Trump administration claimed that the president is leaning in favor of a new Pentagon plan that would keep a small group of American troops in eastern Syria to combat the Islamic State. Trump is pictured on Friday

At least one of the newly-relocated soldiers aired his disagreement with the pullout on Sunday by showing off a badge in support of YPJ, the all female counterpart to the Kurdish-led People's Protection Units (YPG) militia.

American soldiers were reprimanded for wearing YPJ and YPG patches in the spring of 2016 after Turkish officials branded them 'unacceptable'.

American soldiers were banned from wearing YPJ and YPG patches in 2016 after they inflamed tensions between the US and Turkey because the Kurdish militias - key American allies against the Islamic State in Syria - are considered a terrorist group by the Turkish government (file photo)

'Wearing an insignia of a terrorist organization by US soldiers, who are our ally and are assertive about fighting against terrorism, is unacceptable,' Turkey's Foreign Minister Mevlut Cavusoglu said at the time.

In the face of fierce criticism, coalition spokesman Army Col Steve Warren announced that wearing the patches was 'unauthorized and it was inappropriate and corrective action has been taken'.

Warren explained that it was common practice to wear patches supporting military groups they were working with on the ground.

'[T]he special forces community has a long and proud history of wearing such patches when they are partnering with forces around the world, and you'll see examples of that in Afghanistan, in Iraq, in Latin America and all over the world where these special forces personnel train and conduct, you know, foreign internal defense type operations,' Warren said.

'This is something that they often do, and it's an effort to, you know, just kind of connect with those that they're training.'

YPJ has vowed to continue its fight against invading Turkish forces after the American retreat as air strikes have battered the vulnerable region.

Tonight in N. Syria while US forces are withdrawing ‘Thanks for US People but Trump Betrayed Us’ pic.twitter.com/Q6Nembee8q — Mutlu Civiroglu (@mutludc) October 20, 2019

Syrian Kurds, one of them carrying a Kurdish YPG flag, watch as a US military vehicle drives on a road after US forces pulled out of their base in the Syrian town of Tal Tamr on Sunday

A Syrian man receives treatment on Sunday in the Syrian border town of Tal Abyad after it was seized by Turkey-backed forces last week

The US troops that were pulled out of Sarrin - which served as the largest military base in northern Syria - over the weekend are headed to western Iraq, where they will continue to conduct operations against ISIS, Defense Secretary Mark Esper said Saturday.

Speaking to reporters traveling with him to the Middle East, Esper did not rule out the idea that US forces would conduct counterterrorism missions from Iraq into Syria. He said those details will be worked out over time.

His comments were the first to specifically lay out where American troops will go as they leave Syria and what the counter-ISIS fight could look like.

The developments made clear that one of President Trump's rationales for withdrawing troops from Syria was not going to come to pass any time soon.

'It's time to bring our soldiers back home,' he said Wednesday.

But they are not coming home.

The US troops that were pulled out of Sarrin over the weekend are headed to western Iraq, where they will continue to conduct operations against ISIS, Defense Secretary Mark Esper (pictured) said Saturday

Sarrin served as the largest military base in northern Syria

Esper said he has spoken to his Iraqi counterpart about the plan to shift the more than 700 troops leaving Syria into western Iraq, where they will have two missions.

'One is to help defend Iraq and two is to perform a counter-ISIS mission as we sort through the next steps,' he said.

'Things could change between now and whenever we complete the withdrawal, but that's the game plan right now.'

The US currently has more than 5,000 American forces in Iraq, under an agreement between the two countries.

The US pulled its troops out of Iraq in 2011 when combat operations there ended, but they went back in after the Islamic State group began to take over large swaths of the country in 2014.

The number of American forces in Iraq has remained small due to political sensitivities in the country, after years of what some Iraqis consider US occupation during the war that began in 2003.

Esper said he will talk with other allies at a NATO meeting in the coming week to discuss the way ahead for the counter-IS mission.

Asked if US special operations forces will conduct unilateral military operations into Syria to go after IS, Esper said that is an option that will be discussed with allies over time.

He said one of his top concerns is what the next phase of the counter-IS missions looks like, 'but we have to work through those details.'

He said that if US forces do go in, they would be protected by American aircraft.

While he acknowledged reports of intermittent fighting despite the cease-fire agreement, he said that overall it 'generally seems to be holding. We see a stability of the lines, if you will, on the ground'.