Amid growing chaos in Syria, President Donald Trump has ordered all US troops to withdraw from the country's north to avoid an "untenable" conflict between Turkey and US-backed Kurdish fighters, Defense Secretary Mark Esper said Sunday. The approximately 1,000 US troops in Syria are not leaving the country entirely, Esper told CBS' "Face the Nation." Esper said he spoke to Trump on Saturday night amid growing signs that the Turkish invasion, which began Wednesday, is growing more dangerous. 

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"In the last 24 hours, we learned that they (the Turks) likely intend to expand their attack further south than originally planned and to the west," Esper said. 

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Trump's statement on removing troops from Syria

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Esper remains ominous about the Syrian state of affairs

Esper said he would not discuss a timeline for the US pullback, but he said it would be done "as safely and quickly as possible." Esper isn't saying how many US troops will leave the north, but he says they represent most of the 1,000 troops in Syria. He also said it appears the US-backed Kurdish forces, known as the Syrian Democratic Forces, are trying to "cut a deal" with the Syrian army and Russia to launch a counterattack against the Turks.

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