Former national security adviser Susan Rice on Monday panned President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE's decision to withdraw U.S. troops from northern Syria ahead of a planned Turkish invasion as "batshit crazy."

"It seems like six days a week I just put my head in my hands," Rice said on CBS's "The Late Show with Stephen Colbert Stephen Tyrone ColbertColbert implores Pelosi to update 'weaponry' in SCOTUS fight: 'Trump has a literal heat ray' The Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy Juan Williams: Democrats need to bury their divisions MORE," stressing the significance of the president's abrupt move and how it will impact Kurdish-led forces working closely with the U.S. military.

TONIGHT: Former National Security Advisor @AmbassadorRice tells us what she really thinks about Trump's decision to abandon the Kurds in northern Syria. #LSSC pic.twitter.com/nLeT2TPOMK — The Late Show (@colbertlateshow) October 8, 2019

The White House announced late Sunday that Turkey would soon launch an offensive in northern Syria and that U.S. troops would not be in the “immediate area” when it happens. More than 1,000 U.S. forces are currently deployed in Syria, where they work closely with the Kurdish YPG, which leads the Syrian Democratic Forces.

Turkey considers the Kurdish-led forces, which have proved to be the U.S.'s most effective allies in its fight against ISIS, to be a terrorist insurgency.

"These are the people who for the last four years have been fighting on our behalf, with our equipment to defeat ISIS, and they have done it with enormous efficacy, and they’ve sacrificed immensely, and we basically just said to them, 'See ya,'" the former Obama administration official said. "And let the Turks, who are like the hungry wolf trying to kill the lamb, go for it."

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"It’s just appalling because we promised the Kurds our partnership, and we promised them that if they worked with us to defeat our common enemy, then we would stand with them," she added. "And Trump woke up on the wrong side of the bed it appears and decided never mind, which is why suddenly Republicans in Congress have gotten a pulse today."

The move from Trump showcased a clear split between the White House and some of the president's most outspoken supporters in the GOP. Sen. Lindsey Graham Lindsey Olin GrahamLincoln Project mocks Lindsey Graham's fundraising lag with Sarah McLachlan-themed video The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election Trump dumbfounds GOP with latest unforced error MORE (R-S.C.) called the decision a "disaster in the making."

Trump repeatedly defended his decision on Monday, saying that it is time to remove the United States from "ridiculous endless wars."