U.S., Pakistan Trade Fire at Afghan Border

Also at the U.N. today, U.S. Secretary of State Condoleezza Rice agreed that the border between Pakistan and Afghanistan is "very, very unclear," and "one of the most inhospitable places."

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This comes at a tense time for U.S.-Pakistani relations. In recent weeks, the U.S. has quietly stepped up secret military operations against militants inside Pakistan. Those attacks have prompted loud protests from the Pakistani people and their government.

Still, U.S. officials continue to insist Pakistan is a steadfast ally -- even one of America's most important allies -- in the fight against terrorism.