The administration ordered most U.S. diplomatic personnel home from Saudi Arabia.
While nonessential diplomats and family members were directed to leave the country, FBI investigators were sent in, their mission to help with the probe of what Saudi officials said was the deadly work of Al Qaeda.
In Riyadh, the smell of explosives hung in the air and a U.S. flag dangled from the roof of one destroyed building as Powell described the bombing as "criminality, terrorism at its worst."
Half a world away, Bush said those responsible would be tracked down. "It doesn’t matter how long it takes, the war on terror goes on," he said after visiting parts of Missouri damaged by tornados.
Bush also said he "wouldn’t be surprised" if Al Qaeda, which carried out terrorist attacks in the United states on Sept. 11, 2001, was behind the Saudi attacks.
State Department officials said Tuesday evening that eight Americans died in the attack, and 17 remained hospitalized.
