President Bush is warning Afghanistan's Taleban rulers there will be consequences unless they hand over suspected terrorists and destroy terrorist camps.
Mr. Bush told reporters in the White House Tuesday that there will be no negotiations and there is no timetable for the Taleban.
The president says America is on alert as it mounts its war against terrorism. Later in the morning, President Bush announced Reagan National Airport will re-open on Thursday on a limited basis.
Speaking at the airport outside Washington, Mr. Bush said the facility will have the toughest security measures possible, with an increase in the number of air marshalls on board flights.
Air shuttle service to New York and Boston will resume Thursday. A restricted number of flights to six other major transportation hubs will resume in the next few weeks.
Reagan National was the only airport to remain closed following the September 11 airplane suicide attacks in New York and Washington. It is located just across the Potomac River from Washington. Security officials are concerned because flights to and from the airport pass very close to important government buildings.