Until recently, officials with the Bush administration were highlighting Iraq as the "central front" in the war on terrorism, but concern has recently shifted toward the Pakistan-Afghanistan border.
Earlier this month, the top two U.S. intelligence officials visited Pakistan in an effort to get the government there to allow a stronger role for the CIA in carrying out secret operations against al-Qaida in the border area. But the Pakistanis resisted the request, and administration officials say they're growing frustrated that U.S. forces aren't allowed to do more.
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