Richard Leiby and Karen DeYoung
Washington Post 
April 30, 2012
ISLAMABAD, Pakistan— CIA drone missiles hit militant targets in Pakistan on Sunday for the first time in a month, as the United States ignored the Pakistani government’s insistence that such attacks end as a condition for normalized relations between the two perpetually uneasy allies.
The drone strikes, which have long infuriated the Pakistani public, killed four al-Qaeda-linked fighters in a girls’ school they had taken over in the North Waziristan tribal area, security officials there said.
Warning of diplomatic consequences, Pakistan’s Foreign Ministry strongly condemned the attacks, the first since Parliament’s unanimous vote this month approving new guidelines for the country’s relationship with the United States. Some politicians said the drone strikes might set back already difficult negotiations over the reopening of vital NATO supply routes to Afghanistan that Pakistan blocked five months ago.
Last week, after two days of high-level talks in Islamabad, Pakistan told U.S. negotiators that it would not allow NATO convoys to cross its territory unless the United States unconditionally apologized  for November airstrikes that killed 24 Pakistani soldiers near the Afghan border. Although the Obama administration has expressed regret for the killings , which it said were accidental, the Pentagon says both sides share blame .