Republican Senator Lindsey Graham warns against Syria troop withdrawal

WASHINGTON, April 1 (Reuters) - A senior Republican senator on Sunday warned U.S. President Donald Trump against pulling U.S. troops from Syria, saying it would lead to a resurgence of Islamic State and increased Iranian sway over the Syrian government in Damascus.

"It’d be the single worst decision the president could make," Republican Senator Lindsey Graham, a member of the Senate Armed Services Committee, said on the Fox News Sunday program.

"We got ISIL on the ropes. You want to let 'em off the ropes, remove American soldiers," Graham said, using an acronym for Islamic State.

With Islamic State having lost almost all the territory it once held in Syria, Trump has told advisers he wants an early exit of U.S. troops.

That position appears to put the president at odds with U.S. military officials, who see the fight against Islamic State as far from complete.

RELATED: Heartbreaking scenes from Eastern Ghouta, Syria

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Heartbreaking scenes from Eastern Ghouta, Syria
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Heartbreaking scenes from Eastern Ghouta, Syria
Six-month-old twins Safa and Marwa, who suffer from malnutrition, are seen at their home in the Hazzeh area, in the eastern Damascus suburb of Ghouta, Syria, October 25, 2017. REUTERS/Bassam Khabieh SEARCH "KHABIEH MALNUTRITION" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.
Two-and-a-half year old Hala al-Nufi, who suffers from a metabolic disorder which is worsening due to the siege and food shortages in the eastern Ghouta, reacts as she sits on a bed in the Saqba area, in the eastern Damascus suburb of Ghouta, Syria, October 25, 2017. REUTERS/Bassam Khabieh SEARCH "KHABIEH MALNUTRITION" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY.
A Syrian shovels away debris from the higher floor of a building that was reportedly shelled by regime forces in the rebel-held Eastern Ghouta town of Kafr Batna on the outskirts of Damascus on November 20, 2017. / AFP PHOTO / ABDULMONAM EASSA (Photo credit should read ABDULMONAM EASSA/AFP/Getty Images)
ATTENTION EDITORS - VISUALS COVERAGE OF SCENES OF DEATH AND INJURY An injured student lies on a bed at a field hospital in the town of Jisreen, in the eastern Damascus suburb of Ghouta, Syria October 31, 2017. REUTERS/Bassam Khabieh TEMPLATE OUT
DAMASCUS, SYRIA - NOVEMBER 20: People inspect the debris of a building after Assad regime's warcrafts carried out airstrikes over residential areas of Kafr Batna town of the Eastern Ghouta region of Damascus in Syria on November 20, 2017. It is reported that 9 civilians, including 4 children were killed after the attack. (Photo by Anas Damashqy/Anadolu Agency/Getty Images)
ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH A wounded man is seen lying in Douma hospital after heavy shelling in the rebel-held besieged town of Douma, eastern Ghouta in Damascus, Syria, November 19, 2017. REUTERS/Bassam Khabieh TEMPLATE OUT
ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH A wounded man is seen lying in Douma hospital after heavy shelling in the rebel-held besieged town of Douma, eastern Ghouta in Damascus, Syria, November 19, 2017. REUTERS/Bassam Khabieh
A man walks on rubble after an airstrike in the rebel-held city of Douma, in the eastern Damascus suburb of Ghouta Syria November 2, 2017. REUTERS/Bassam Khabieh
Two-and-a-half year old Hala al-Nufi, who suffers from a metabolic disorder which is worsening due to the siege and food shortages in the eastern Ghouta, is held by her uncle in the Saqba area, in the eastern Damascus suburb of Ghouta, Syria, October 25, 2017. REUTERS/Bassam Khabieh SEARCH "KHABIEH MALNUTRITION" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY.
Children wait to be examined from Unicef health workers in Kafra Batna in the Damascus suburb of eastern Ghouta, Syria October 30, 2017. REUTERS/Bassam Khabieh
ATTENTION EDITORS - VISUALS COVERAGE OF SCENES OF DEATH AND INJURY An injured student lies on a bed at a field hospital in the town of Jisreen, in the eastern Damascus suburb of Ghouta, Syria October 31, 2017. REUTERS/Bassam Khabieh TEMPLATE OUT
ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH Injured students lie on beds at a field hospital in the town of Jisreen, in the eastern Damascus suburb of Ghouta, Syria October 31, 2017. REUTERS/Bassam Khabieh
Smoke rises at a damaged site in Ain Tarma, eastern Damascus suburb of Ghouta, Syria, September 14, 2017. REUTERS/Bassam Khabieh
Children hold corncobs at Ain Tarma, eastern Damascus suburb of Ghouta, Syria July 19, 2017. REUTERS/Bassam Khabieh
A Syrian child is seen walking near International Red Cross vehicle in the rebel-held city of Douma, in the eastern Damascus suburb of Ghouta, Syria November 12, 2017. REUTERS/Bassam Khabieh
A Syrian woman walks past damaged buildings in Douma, in the eastern Damascus suburb of Ghouta, Syria November 15, 2017. REUTERS/Bassam Khabieh
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The White House's National Security Council is expected to meet early next week to discuss the U.S.-led campaign against Islamic State in Syria.

A senior administration official told Reuters that Trump's advisers believe the U.S. military needs to stay in Syria in small numbers for at least two more years.

Trump is unhappy with the advice, but it is unclear if he will actually order a troop withdrawal, the official said.

About 2,000 U.S. troops are deployed in Syria.

Graham, in the television interview, echoed White House advisers' concerns about an early pullout.

"This is a disaster in the making," he said.

"There are over 3,000 ISIS fighters still roaming around Syria," Graham said, using another acronym for Islamic State. "If we withdrew our troops anytime soon, ISIS would come back, the war between Turkey and the Kurds would get out of hand, and you’d be giving Damascus to the Iranians without an American presence." (Reporting by Warren Strobel and Steve Holland Editing by Bill Rigby)

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