The United States begins military operations in Afghanistan to dismantle Al-Qaeda and remove the Taliban from power.
Intelligence agencies track the courier believed to be closely associated with Osama bin Laden, leading to critical insights about his location.
CIA discovers the compound in Abbottabad, Pakistan, suspected to be harboring Osama bin Laden.
U.S. Navy SEALs conduct a raid on the Abbottabad compound, killing Osama bin Laden.