The nation that brought the world the mushroom cloud is now hard at work on a new project: coming up with cyberweapons so strong that their very existence would deter foreign governments from attacking U.S. databases and crucial computer systems.
Secretary of Homeland Security Jeh Johnson urged a reluctant Congress on Thursday to allow the Obama administration to close the prison for terrorism suspects at Guantanamo Bay, Cuba, and to transfer the last 116 detainees to facilities on American soil.
Islamic State militants' attempts to inspire Americans to launch attacks at home pose a bigger threat to the U.S. than Al Qaeda, the head of the FBI said Wednesday.
A new sheriff is coming to clean up U.S. Customs and Border Protection, the nation's largest law enforcement agency.
A U.S. military drone strike in northwest Syria has killed Muhsin Fadhli, the head of a shadowy cell of veteran Al Qaeda operatives known as the Khorasan Group that sought to attack Western targets, Pentagon officials said.
A secret U.S. intelligence assessment predicts that Iran’s government will pump most of an expected $100-billion windfall from the lifting of international sanctions into the country's flagging economy and won't significantly boost funding for militant groups it supports in the Middle East.
House Republicans sharply criticized Homeland Security Secretary Jeh Johnson over what they called the failure of the Obama administration to deport an immigrant with a long criminal record who has been charged in the shooting death in San Francisco of Kathryn Steinle.
Setting up a clash between counter-terrorism priorities and constitutional protection against unwarranted intrusion, three top federal law enforcement officials urged Congress and Silicon Valley to provide government agencies special access to encrypted cellphones and other Internet devices.