Trump has threatened to withdraw US troops from Syria unless Saudi Arabia pays for the costs. He said on April 3, "we are working on a plan to get out of Syria. If Saudi Arabia wants us to stay there, it has to pay for it."

Saudi Arabia has announced the contribute of $ 100 million as a contribution to the so-called International Coalition led by US allegedly to help restore stability to the liberated areas of "Daesh" in north-east Syria,

The representative of the US president, the special supervisor of fighting against the Daesh in Syria and Iraq, McGurk said Saudi Arabia had contributed $100 million and United Arab Emirates had pledged $50 million in donations to stabilizing programs. Australia, Denmark, European Union, Taiwan, Kuwait, Germany and France also participated, he said.

The State Department said it would redirect $230 million in frozen funding for Syria to other unspecified foreign policy priorities, while emphasizing that the move did not signal a retreat by Washington from the Syrian conflict. 

Trump froze the $230 million in March, threatening to withdraw United States forces from Syria, subject to a review to reassess Washington's role in the brutal seven-year-old conflict. 

Whether or not the coalition money will convince him to stay is unclear.