Senator Lindsey Graham, a close Trump ally but fierce critic of the announced withdrawal, said after having lunch with the president Sunday he thinks "we're slowing things down in a smart way. I campaigned against the NEVER ENDING WARS, remember!", he concluded in the third tweet. "We're not talking about vast wealth, we're talking about sand and death". We want to keep our journalism open and accessible and be able to keep providing you with news and analyses from the frontlines of Israel, the Middle East and the Jewish World.
Trump responded to the question, saying, "Somebody said four months, but I didn't say that", before he continued on to criticize former President Barack Obama's weak stance on Syria, which had left him in a hard position.
Graham says Trump is receptive to making a deal if it achieves his goal of securing the border.
United States troops have helped rid much of Syria's north-east of the jihadist group, but pockets of fighters remain.
President Donald Trump has reportedly agreed to allow the Pentagon four months to withdraw the 2,000 US military troops from Syria. The Kurdish fighters are pulling back across the Euphrates river, the Syrian government said.
Trump decided on the Syria withdrawal in a phone call with Turkish President Tayyip Erdogan, ignoring the advice of top national security aides and without consulting lawmakers or USA allies participating in anti-IS operations.
Trump did not provide a timetable for the planned military exit from Syria, which he unexpectedly announced last month against the advice of top national security aides and without consulting politicians or USA allies participating in the fight against the Islamic State of Iraq and the Levant (ISIL, also known as ISIS).
Their departure was in line with an agreement "for the return of normal life to the area of northern Syria", the ministry said in a statement.More news: Floyd Mayweather spoke honesty after defeating Tenshin Nasukawa in exhibition bout
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"I didn't like the fact that they [YPG] are selling the small oil that they have to Iran", Trump said during a Cabinet meeting at the White House in front of reporters.
Trump also affirmed there was no timetable for the withdrawal from Syria, countering aNew York Times report on Monday of a four-month period for the troop withdrawal.
"Slow this down. Make sure we get it right. He's frustrated, I get that".
"He said "we're killing ISIS" for Assad and Iran" and that Iran "hates ISIS more than we do".
Critics not only warn of a resurgence of IS, but worry that the American exit is a betrayal of US -backed Kurdish forces in Syria and leaves them vulnerable to an attack from Turkish forces.
Kuwait's Deputy foreign minister Khaled Al-Jarallah said the Gulf state remained committed to the Arab League's decision and would reopen its embassy in Damascus once the organisation allowed it.
Over the intervening years the numbers of U.S. troops in Syria increased, standing today at some 2,000, though some estimates place the number perhaps even higher.
National security adviser John Bolton was expected to travel to Israel and Turkey next weekend to discuss the President's plans with the American allies.