The document outlines a series of terrorist attacks and plots against American targets from 1993 to 2000 by Islamist extremist groups such as al Qaeda, providing warnings that they intended to kill Americans in large numbers. These included the 1993 World Trade Center bombing, attacks on US embassies in Africa in 1998, and an attempted bombing of Los Angeles airport in 1999. It notes that in 1998, Osama bin Laden issued a fatwa declaring it a religious duty for all Muslims to kill Americans. Therefore, while the 9/11 attacks were a shock, they should not have come as a surprise given the clear warnings over the prior decade that Islamist terrorists were determined to inflict mass casualties in the US.