evidence: President Donald Trump shocked lawmakers from both parties recently when he announced the United States would be withdrawing troops from the Syrian border with Turkey. [...] According to Trump, Mattis told him early in Trump’s administration the military was "very low on ammunition" when they were at a position "with a certain country" and "may have had a conflict." [...] PolitiFact, "Donald Trump claims Russia is 'not happy' U.S. troops are leaving Syria. That isn't true," Dec. 21, 2018