Earlier this month, the Pentagon said it had received "credible reports" suggesting that Mohammed Atef -- one of al Qaeda's top aides to Osama bin Laden -- was killed in an airstrike south of Kabul.
CNN: Taliban say Omar safe, deny strike hit leadership compound
U.S. prosecutors believe Osama bin Laden -- described as the "prime suspect" in the hijackings -- was behind that plot as well.
U.S. authorities have identified Saudi dissident Osama bin Laden -- living in Afghanistan as a "guest" of the Taliban -- as the prime suspect behind last week's attacks.
While President Obama was in the Oval Office, making the toughest calls any president has had to make -- how to save the economy from depression, rescue the American auto industry, bring affordable health care to millions of Americans or take out Osama bin Laden -- Paul Ryan was in a different room.
Odum said leaks about U.S. intelligence over the past 10 to 15 years may have allowed people such as Osama bin Laden -- the Saudi multimillionaire and suspected terrorist who the Bush administration believes may be behind the attacks on Washington and New York -- to learn a great deal about how to evade it.
CNN: Experts: A variety of intelligence factors may have played a role
But Kenyan and Israeli officials speculated that Osama Bin Laden's al-Qaeda network might have been responsible.
They said they will present evidence that former al-Qaida leader Osama bin Laden asked for and received information WikiLeaks published.
In May 2002 Riaz Basra was killed, and analysts believe that the group began to develop links with Osama Bin Laden's al-Qaeda network.
Perhaps the most obvious man the US will be looking to blame is the Saudi-born millionaire Osama Bin Laden, now in hiding in Afghanistan.
Pakistani doctor Shakil Afridi, who helped the CIA track down al-Qaeda leader Osama Bin Laden, is regarded as a traitor by Pakistan's security agencies.
The UK says that belonging to Osama Bin Laden's al-Qaeda network- or supporting it - is an offence under theTerrorism Act as it is a proscribed organisation.
In an earlier speech at the Pentagon, Vice-President Joe Biden praised the US soldiers who had killed al-Qaeda leader Osama Bin Laden in Pakistan in May of this year.
BBC: 9/11 anniversary: Sombre US honours victims 10 years on
He has described 2013 as a "critical" transition year for Afghanistan, 12 years after the US-led invasion to topple the Taliban regime that was harbouring al-Qaeda leader Osama bin Laden.
The sanctions are intended to force the Taleban to hand over the Saudi-born militant Osama Bin Laden, who is accused by the United States of plotting the 1998 bombings of US embassies in Kenya and Tanzania, which killed more than 250 people.
"While the CIA needs to maintain a paramilitary capability ... the CIA should not be used, in my view, to carry out traditional military activities, " Brennan wrote, referring to activities like the special operations raid that killed al-Qaida leader Osama bin Laden.
Following a decade-long hunt, Osama bin Laden was finally run to ground in Pakistan two years ago.
The new film Zero Dark Thirty, about the decade-long search for Osama bin Laden, is the latest example of this phenomenon.
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The United Nations imposed aviation and financial sanctions against the Taliban in November after it refused to expel Saudi-born terrorism suspect Osama bin Laden.
The United States, in particular, is demanding that the Taleban hand over the Saudi-born militant, Osama bin Laden, who Washington accuses of involvement in the bombing of two US embassies in Africa last year and of masterminding a loose network of Islamic radicals hostile to the West.
Washington has identified the Saudi-born Islamic militant, Osama Bin Laden, as a key suspect behind the attacks.
During this period, Iran allowed in hundreds of senior figures of the Taliban - including family members of Osama Bin Laden.
As Mukasey explained, "the government was required to disclose, as it is routinely in conspiracy cases, the identity of all known co-conspirators, " including Osama bin Laden.
CENTERFORSECURITYPOLICY: Wartime enemies or common criminals?
Director Kathryn Bigelow, whose The Hurt Locker won Academy Awards for Best Picture, Best Director, and Best Original Screenplay, tells us the story of the multi-year, global hunt for Osama bin Laden, seen through the eyes of CIA analyst Maya.
FORBES: 'Zero Dark Thirty' Review: A Film To Define A Decade
As well as pursuing Gen Pinochet, Mr Garzon also rose to prominence in Spain for investigating Basque separatist group Eta, 1980s-era government death squads and indicting Osama Bin Laden.
On his watch, the US eliminated Osama bin Laden and is nearing the strategic defeat of al-Qaeda.
Iran was a strong opponent of the Taliban, which sheltered Osama bin Laden and others before the U.S.-led invasion after the Sept. 11, 2001, attacks.
But they are also the kind of weapon that America would want to deploy against its ultimate target: the al-Qaeda terrorist network and its boss, Osama bin Laden.
ECONOMIST: Fighting terrorism: Nation-bruising, nation-building | The
That quarrel had just about been patched up by May, when American special forces discovered and killed Osama bin Laden nesting in what was probably a Pakistani army-spy safe house in a military town, Abbottabad.
ECONOMIST: Relations between the two look increasingly poisonous
The Obama administration, it seems, has granted an unusual amount of access to the team behind The Hurt Locker (writer Mark Boal and director Kathryn Bigelow) for an upcoming campaign-season film about the mission to kill Osama bin Laden.
CENTERFORSECURITYPOLICY: Obama Killed Osama, And Then Ignored His Own Advice
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