Bolton, who is in Israel to reassure the US ally of the Trump-ordered withdrawal, said there is no timetable for the pullout of American forces in northeastern Syria, but insisted it is not an unlimited commitment.
Bolton said Sunday that "the timetable flows from the policy decisions that we need to implement."
His comments mark the first public confirmation the drawdown has been slowed, as Trump faced widespread criticism from allies and the resignation of Defense Secretary Jim Mattis for a policy that was to have been conducted within weeks.