Commissioner David Stern is aware the NBA has increased security around Boston Celtics guard Tony Allen, though he wouldn’t give specifics about the situation.

Federal prosecutors in Texas say a New Mexico man has pleaded guilty to mailing threatening letters containing suspicious powder to dozens of banks and federal offices...

Iran does not yet have any highly enriched uranium, the fuel needed to make a nuclear warhead, two top U.S. intelligence officials told Congress Tuesday, disputing a...

A top U.S. intelligence official says Iran does not have any highly enriched uranium, the fuel used to power a nuclear warhead.

A top U.S. intelligence official says Iran does not have any highly enriched uranium, the fuel used to power a nuclear warhead.

A top military intelligence official says the Somali extremist group al-Shabaab is poised to formally merge with al-Qaida, expanding the terrorist franchise in East...

A top military official is telling Congress that the use of roadside bombs in Afghanistan more than doubled in 2008 over the previous year.

A man has pleaded not guilty to charges alleging he mailed threatening letters containing suspicious powder to dozens of banks and federal offices across the country.

French President Nicolas Sarkozy and two top government ministers have been sent anonymous death threats in letters stuffed with 9mm-caliber bullets, a judicial...

A New Mexico man was indicted Tuesday for allegedly mailing threatening letters containing suspicious powder to dozens of banks and federal offices across the country...

A man accused of mailing threatening letters containing suspicious powder to dozens of banks and federal offices has been indicted in Texas.

The governments of Afghanistan and Pakistan are losing ground to insurgents and terrorists but the most immediate threat to U.S. security interests is the festering...

The economic crisis has trumped bullets and bombs in the intelligence chief’s latest assessment of the top security threats to the United States.

Federal authorities have arrested a 47-year-old New Mexico man in the mailings of suspicious powder to banks and federal offices around the country.

Federal agents have made an arrest in the mailings of suspicious powder to banks and federal offices around the country.

Anti-terror officials say the Mumbai attacks may become a model for low-frills terrorism groups to follow.

U.S. intelligence officials say the Jan. 20 inauguration is an attractive target for international and domestic terrorist groups, but they know of no specific threat...

Police said a man repeatedly called in bomb threats to a Pittsburgh-area high school so his girlfriend would get out of class early. Christopher Wiley, 19, of Duquesne,...

A spokesman for U.N. General Assembly President Miguel d’Escoto Brockmann says U.S. authorities have been asked to help investigate online death threats against...

The State Department has banned U.S. diplomats and other government personnel from all Western hotels in Yemen because of the threat of terrorism.