June 2001: al-Qaida members training in Afghanistan (frame grab from an al-Qaida video).
September 29, 2011 Amin al-Haq is thought to have escaped from Afghanistan with the al-Qaida leader in 2001. He had been held by Pakistani authorities for the past three years.
A photo taken by a local resident shows the wreckage of a helicopter next to the wall of the compound where Osama bin Laden was shot and killed.
August 17, 2011 China said reports that it inspected and took a sample of the remnants of a stealth helicopter used in the bin Laden raid were "groundless" and "ridiculous."
August 15, 2011 Sources tell The Financial Times and The New York Times that Chinese engineers were given a chance to examine the top-secret stealth aircraft. Pakistan denies the reports.
June 16, 2011 Osama bin Laden's longtime No. 2 assumes the leadership position in the wake of the al-Qaida leader's death.
May 6, 2011: A man leans against a wall in Abbottabad, Pakistan, near the compound where al-Qaida leader Osama bin Laden was discovered and killed.
Aamir Qureshi /AFP/Getty Images
June 15, 2011 The New York Times broke the news about arrests of some who gave the CIA information that led to Osama bin Laden's death. Now, Pakistan is disputing some of the story and calling the detentions routine.
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June 1, 2011 The world is anxiously watching events in Pakistan, a dangerous nation that has gotten more violent in the wake of the May 2 killing of al-Qaida leader Osama bin Laden. The murder of journalist Syed Saleem Shahzad is the latest unsettling news.
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Secretary of State Hillary Rodham Clinton and Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, were in Islamabad today (May 27, 2011).
Aamir Qureshi /AFP/Getty Images
May 27, 2011 Even as Secretary of State Hillary Rodham Clinton is calling the killing of Osama bin Laden a "turning point" in U.S.-Pakistani relations, many there are insisting that the al-Qaida leader is still alive.
The compound in Abbottabad, Pakistan, where al-Qaida leader Osama bin Laden was found and killed. (May 3, 2011, file photo.)
May 26, 2011 According to The Washington Post, the team will be looking for materials that the al-Qaida leader and his follows might have hidden at the site.
May 26, 2011 Reports from Pakistan say as many as 24 people died in a suicide truck bombing and the Taliban in Pakistan claims responsibility.
Osama bin Laden.
May 19, 2011 In a new tape released by al-Qaida, Osama bin Laden said change would "blow over the entire Muslim world."
May 18, 2011 It's just supposition at this point, the defense secretary concedes. But he and other U.S. officials believe there were people in Pakistan who knew the al-Qaida leader was living there.
May 18, 2011 Saif al-Adel is "a seasoned operator, he has experience, he has the bona fides within the organization," one expert tells NPR.
Pakistani military and police officials cordoned off a street in Abbottabad near the compound where Osama Bin Laden was found and killed. (May 8, 2011, file photo.)
Asif Hassan /AFP/Getty Images
May 17, 2011 Anatol Lieven, author of the new book Pakistan: A Hard Country, argues that Pakistan has been hurt more by the ongoing war on terrorism than it's been helped by billions of dollars in U.S. military aid.
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May 16, 2011 "There was no one essential ... piece of information that led us" to the al-Qaida leader, the CIA chief said in a letter. And some detainees subjected to "enhanced interrogation" lied about key information — the identity of a bin Laden courier.
May 16, 2011 "One of the signatures of bin Laden's presence was an extended family and I think that's one of the building blocks that built the evidentiary case to find him," says journalist and bin Laden expert Peter Bergen.
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