Immediately after al-Qaeda's attack on the United States, America went after the world's most notorious terrorist with a quick-action injection of cash, commandos and massive firepower.

Within a few months, that first phase of the search for Osama bin Laden would give way to a decade-long manhunt in which the tedious work of analysis and surveillance would eventually bag the target.

To find bin Laden, who had declared holy war on the United States in 1996, the Americans needed to think more like him, to absorb the structures and rhythms of a terror network.

Read more about the hunt for Osama bin Laden from The Washington Post

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