The Obama administration is strongly considering a war strategy that incorporates at least some additional forces in Afghanistan alongside a stepped up campaign against al Qaeda and Taliban targets in Pakistan.
The Pentagon says Defense Secretary Robert Gates, a key player, is undecided about next steps.
But he has publicly said many of his earlier reservations about adding forces have been addressed and remains a strong proponent of counter-insurgency strategy, signals that he may be leaning toward a further buildup.
Combining an expanded counterinsurgency campaign in Afghanistan with more counterterrorism operations inside Pakistan's tribal areas would be consistent with the administration's existing strategy, launched in March.
