Osama bin Laden was born into one of Saudi Arabia's most prosperous families, but he left home in search of revolution, found a path of fanaticism, inspired a murderous organization that terrorized the West, and ultimately became the most wanted man in the world.
Challenging the might of the "infidel" United States, Osama bin Laden masterminded the deadliest militant attacks in history and then built a global network of allies to wage a "holy war" intended to outlive him.
Here are some of the other top militants hunted down in Pakistan, a country at the centre of the fight against Islamist militants.
Here are some quotes from the last three US presidents on their efforts to "get" the al Qaida leader.