Pakistan's unpopular president resigned Monday, leaving a divided government to pick a successor and face other mounting problems.
US officials say the system is merely a protection against rogue states like Iran.
Afghan and NATO officials are seeing a rise in numbers of foreign fighters in Afghanistan at the same time US officials say attacks by Al Qaeda in Iraq have sharply dropped.
Government strategy has been ineffective, and officials are preoccupied with bid to oust Musharraf.
Oil-pipeline routes, market leverage make struggle a 'battle for energy.'
The pro-independence protests in the Muslim-majority state are threatening India-Pakistan peace talks.
The US military has rejected claims that Pakistani doctor Aafia Siddiqui, who has been missing for the past five years, was being illegally detained and tortured.
Riots sparked by a controversial land-transfer deal have widened to become pro-independence rallies.