U.S. Defense Secretary Robert Gates and Chairman of the Joint Chiefs of Staff Admiral Mike Mullen hold their first press briefing since the raid that killed Usama bin Laden.  And the Defense Secretary is defending Pakistan's government against charges it must have been involved in hiding the al-Qaeda mastermind.

FOX News Radio White House Correspondent Mike Majchrowitz reports...

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And though he's defending senior leadership in Pakistan's government, Secretary Gates says it's his suspicion that "someone knew."

He also adds that, as some lawmakers call for an end to U.S. aid to the country, it is important for assistance to continue...

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Accounts of the raid have evolved since that Sunday night---the reported use of bin Laden's wife as a human shield and reports of her death, the amount of gunfire that Navy SEALs encountered when they arrived.

Chairman Mullen says that when it comes to talking about the details of the mission, it's time to just stop...

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