WASHINGTON — President Donald Trump is dramatically scaling back U.S. goals in Syria as he pushes for a quick military withdrawal, Trump administration officials said Wednesday, abandoning plans to stay long-term to stabilize the country and prevent the Islamic State group from re-emerging.

Trump has given no formal order to pull out the 2,000 U.S. troops currently in Syria, nor offered a public timetable, other than to say the United States will pull out just as soon as the last remaining IS fighters can be vanquished. But Trump has signaled to his advisers that ideally, he wants all troops out within six months, according to three U.S. officials — a finale that would come shortly before the U.S. midterm elections.

In his haste to withdraw from Syria, Trump stands alone. The Pentagon, the State Department and CIA are all deeply concerned about the potential ramifications if the U.S. leaves behind a power vacuum in Syria, as are Israel, Arab leaders and other nations in the U.S.-led coalition that has fought IS in Iraq and Syria since 2014.