National security adviser James Jones says al-Qaida leader Osama bin Laden still spends some time inside Afghanistan.
Most recent U.S. estimates have placed bin Laden inside Pakistan. But Jones, a retired general, says the al-Qaida leader is "sometimes on the Pakistani side of the border, sometimes on the Afghan side of the border."
Jones says the U.S. military and its allies in Afghanistan are "going to have to get after that" to ensure bin Laden is "once again on the run or captured or killed."
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Earlier, Defense Secretary Robert Gates said the U.S. hasn't had any good intelligence for years on bin Laden's whereabouts.
Gates said he couldn't confirm recent reports that bin Laden had been seen recently in Afghanistan.
Jones appeared on CNN's "State of the Union," while Gates was on ABC's "This Week."
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