RIYADH, Saudi Arabia - Secretary of State Colin Powell (news - web sites) toured the twisted wreckage left by a terrorist bombing Tuesday, and President Bush (news - web sites) promised those responsible "will be brought to justice." The FBI (news - web sites) dispatched a team to help investigate. A State Department official said it was "very possible" the administration would order home all nonessential diplomats in light of the attacks. In Riyadh, the smell of explosives hung in the air and a U.S. flag dangled from the roof of the destroyed building as Powell described the bombing as...