Five ways Trump's Syria decision spells trouble

President TrumpDonald John TrumpPelosi arrives in Jordan with bipartisan congressional delegation Trump says his Doral resort will no longer host G-7 after backlash CNN's Anderson Cooper mocks WH press secretary over Fox News interview MORE this week showed no sign of backing down on his decision to withdraw U.S. troops from northern Syria, stoking fears in Washington of worst-case scenarios from abandoning a crucial defense partner. 

Trump's move, which has paved the way for Turkey to proceed with a long-planned offensive against Syrian Kurdish forces who were instrumental in the fight against ISIS, has far-reaching implications both at home and abroad.

Critics, including many from Trump's own party, argue the president is irreparably damaging the country's standing as a reliable partner by abandoning a U.S. ally, the Syrian Democratic Forces (SDF), to be slaughtered by Turkey as well as fueling mayhem in the region that could allow ISIS to regain its footing.

Trump, however, has pushed ahead, insisting the Kurds have mostly been fighting for their land and that he is filling a campaign promise to end “forever wars.”

Here are five reasons Trump's move could spell trouble.

ISIS fight upended, threatening a resurgence 

In moving back from the Syria-Turkey border, U.S. troops left their Kurdish partners to both guard prisons holding more than 10,000 ISIS fighters and defend against Turkey's incursion.

Critics fear the SDF will abandon or release ISIS prisoners when it has to devote its resources to fighting Ankara.

The attacks also have distracted from NATO’s counter-ISIS campaign, though Joint Chiefs of Staff Chairman Gen. Mark Milley on Friday insisted that the fight against ISIS in Syria had not stopped.

The SDF “is still guarding prisoners in the area that have been detained over time,” he told reporters at the Pentagon while acknowledging the Turkish incursion “has had some effect” on the ISIS fight.

The administration insists Turkey will be responsible for detaining ISIS fighters, but Brett McGurk, who resigned as Trump’s special envoy to the anti-ISIS coalition in December, warned Turkey “has neither the intent, desire, nor capacity” to manage ISIS detainees.

“Believing otherwise is a reckless gamble with our national security,” he tweeted.

US reputation damaged for future partnerships

In defending his decision to pull back U.S. troops, Trump has claimed he is fulfilling a campaign promise to halt “endless wars.”

But in leaving the SDF to fend for itself, lawmakers warn Trump has sent a chilling message to allies and potential U.S. partners who may want help in future conflicts.

The Trump administration "cut deal with [Turkish President Recep Tayyip Erdoğan] allowing him to wipe [the Kurds] out. Damage to our reputation & national interest will be extraordinary & long lasting," Sen. Marco RubioMarco Antonio RubioWhite House staggers after tumultuous 48 hours Erdoğan got the best of Trump, experts warn Hillicon Valley: GOP lawmakers offer election security measure | FTC Dem worries government is 'captured' by Big Tech | Lawmakers condemn Apple over Hong Kong censorship MORE (R-Fla.) wrote on Twitter on Wednesday.

The president also sparked backlash among lawmakers for downplaying the Kurds’ role in helping the U.S. fight against ISIS, tweeting that they "fought with us, but were paid massive amounts of money and equipment to do so."

Trump maintained during a rambling press conference Wednesday that the Kurds are merely "fighting for their land." He attempted to justify his stance based on the fact that Kurdish soldiers did not fight alongside Americans during World War II.

The Kurds "didn't help us in the Second World War, they didn't help us with Normandy as an example—they mention the names of different battles, they weren't there," Trump said.

Syrian Kurdish officials have accused the president of stabbing them in the back after 11,000 of their troops were killed in the battle against ISIS.

"Now we have been betrayed," Ilham Ahmed, co-chairman of the Syrian Democratic Council, the SDF's political arm, wrote in a Washington Post op-ed this week.

Defense Secretary Mark EsperMark EsperErdoğan got the best of Trump, experts warn Overnight Defense — Presented by Boeing — Trump insists Turkey wants cease-fire | Fighting continues in Syrian town | Pentagon chief headed to Mideast | Mattis responds to criticism from Trump NATO ministers need to have difficult conversations to keep everyone honest MORE insisted Friday that "we have not abandoned the Kurds" but said the U.S. was focused on protecting its own soldiers first.

Trump goes head-to-head with his own party 

Some of the staunchest critics of Trump’s Syria move include numerous figures from his own party.

The pushback came swiftly, with former U.N. Ambassador Nikki HaleyNimrata (Nikki) HaleyPoll shows Michelle Obama would lead in New Hampshire if she entered 2020 Democratic race Five ways Trump's Syria decision spells trouble Tulsi Gabbard rips Trump's Syria decision: 'Kurds are now paying the price' MORE tweeting that leaving the Kurds “to die is a big mistake.”

Sen. Lindsey GrahamLindsey Olin GrahamErdoğan got the best of Trump, experts warn Graham: I'm seeking to make Trump successful 'but not at all costs' The Memo: Trump's sea of troubles deepens MORE (R-S.C.), a close Trump ally, called the decision a “disaster in the making,” adding that it “ensures [an] ISIS comeback” and “will be a stain on America’s honor.”

Graham, along with Sen. Chris Van HollenChristopher (Chris) Van HollenPelosi, Schumer hit 'flailing' Trump over 'sham ceasefire' deal On The Money: Senate fails to override Trump veto over border emergency | Trump resort to host G-7 next year | Senators to push Turkey sanctions despite ceasefire | McConnell tees up funding votes House Foreign Affairs leaders introduce Turkey sanctions bill MORE (D-Md.), is looking to impose financial repercussions on Turkey.

House Republican Conference Chairwoman Liz CheneyElizabeth (Liz) Lynn CheneyHouse Republicans 'demand the release of the rules' on impeachment Republicans seek to delay effort to censure Schiff after Cummings' death House Foreign Affairs leaders introduce Turkey sanctions bill MORE (Wyo.) this coming week also plans to introduce legislation to implement sanctions on Turkey, an act that has already garnered more than two dozen GOP co-sponsors.

House Minority Leader Kevin McCarthyKevin Owen McCarthyHouse Republicans 'demand the release of the rules' on impeachment GOP leader defends Mulvaney amid backlash over quid pro quo comments Republicans seek to delay effort to censure Schiff after Cummings' death MORE (R-Calif.), House Minority Whip Rep. Steve ScaliseStephen (Steve) Joseph ScaliseHouse Republicans 'demand the release of the rules' on impeachment Scalise, Cole introduce resolution to change rules on impeachment Republicans seek to delay effort to censure Schiff after Cummings' death MORE (R-La.) and House Armed Services Committee ranking member Mac ThornberryWilliam (Mac) McClellan ThornberryPelosi arrives in Jordan with bipartisan congressional delegation Furious Republicans prepare to rebuke Trump on Syria Five ways Trump's Syria decision spells trouble MORE (R-Texas) are among the Republicans who have supported the legislation so far.

The Democratic chairman and ranking Republican on the House Foreign Affairs Committee said Friday they will also introduce legislation to slap sanctions on Turkey.

Washington's relationship with Ankara is further strained

The relationship between the U.S. and Turkey has been tense over the last several years and was made all the worse in July after Ankara purchased a Russian air defense system.

The system is incompatible with other NATO systems and led the United States to remove Turkey from the F-35 joint strike fighter program, with U.S. national security personnel fearing the Russian system would allow the Kremlin to glean sensitive and protected information from the advanced fighter jet.

Esper on Friday said the United States is “greatly disappointed” by Turkey’s offensive in Syria and that it had damaged the already tense relationship between the two countries.

Making matters worse, U.S. Special Forces troops stationed in Syria came under artillery fire from Turkey late Friday, even as Milley earlier in the day said the Turkish military “is fully aware, down to explicit grid coordinate detail, of the locations of U.S. forces.”

The Pentagon maintained it “remains opposed” to the operation, especially “in areas where the Turks know U.S. forces are present,” and warned Turkey it may respond if U.S. troops are threatened.

“The U.S. demands that Turkey avoid actions that could result in immediate defensive action,” Navy Capt. Brook DeWalt said in a statement.

Rising tensions were underscored when the leaders of the House Foreign Relations panel signaled their support for legislation to slap sanctions on Turkey. The bipartisan bill would sanction Turkish officials and banks until the country ends its military operations in Syria.

Treasury Secretary Steven Mnuchin on Friday also threatened “powerful sanctions” against Ankara and said the United States “can shut down the Turkish economy if we need to.”

Erdoğan said the same day, however, that Turkey “will not take a step back” from its offensive. 

Russia, Iran empowered by move

Trump’s decision in northern Syria has left a potential power vacuum in the area, with security experts and former U.S. officials calling the move “a gift” to U.S. adversaries such as Russia and Iran.

“Trump tonight after one call with a foreign leader provided a gift to Russia, Iran, and ISIS,” McGurk said Monday on Twitter.

Moscow and Tehran have both inserted their militaries into Syria’s eight-year civil war, bolstering Syrian President Bashar Assad, while the United States has imposed sanctions on Russia for its support of the Assad government.

National security experts fear that Russian President Vladimir PutinVladimir Vladimirovich PutinJill Stein: 'I am not a Russian spy' Congress plays party politics regarding Syria and Saudis Pelosi, Schumer hit 'flailing' Trump over 'sham ceasefire' deal MORE, who has made no secret of extending the Kremlin’s influence into the Middle East, will use Trump’s move as an opportunity to gain more of a foothold in Syria.

Putin late this week called on foreign militaries to leave Syria as Turkey continued to wage its offensive while signaling that Russian forces would stay in the country until a new Syrian government tells Moscow it doesn't need any more help.

Russia already counts Turkey as a friend, with Moscow selling a missile defense system to Ankara earlier this year, drawing the ire of Washington.

Former CIA Deputy Director John McLaughlin slammed Trump for "impulsive and reckless instincts," calling his move this week “a disaster on multiple levels.”

“The kingmakers will be U.S. rivals Russia and Iran, working with a wandering U.S. ally, Turkey,” McLaughlin wrote Thursday.