WASHINGTON (AP) — The White House is reviewing a new series of options that would leave fewer than 10,000 U.S. troops in Afghanistan next year, a U.S. official said Tuesday.

The options, requested by the administration, include a range of troop numbers from zero to 10,000 U.S. troops and reflect the long-running debate over how many are needed to train and advise the Afghan security forces and conduct counterterrorism missions.