Negotiations between the U.S. and Pakistan on reopening ground supply routes into Afghanistan have stalled.
The Pentagon has called its negotiating team home, spokesman George Little says.
The routes were closed last November by Pakistan in retaliation for a U.S. air assault that killed 24 Pakistani soldiers. The border crossings had been an important means of getting U.S. war materiel into Afghanistan.
Little said Monday that part of the U.S. team left Islamabad over the weekend and the rest will leave shortly. He says they are prepared to return on short notice if circumstances change.
Little also says a senior Pentagon official, Peter Lavoy, talked to senior Pakistani officials over the weekend but was not allowed to meet with Gen. Ashfaq Parvez Kayani, chief of the Pakistani army.