Two church bombings in northern Nigeria killed at least 15 people and wounded 38 others Sunday morning, the Red Cross said.
His predecessor joked about being compared to "Jack Bauer," but while the new head of the National Counterterrorism Center may not be running and gunning like the fictional '24' character, Matthew Olsen is tasked with keeping the country safe from attack.
The National Counterterrorism Center based in Virginia was created to better integrate and analyze intelligence in hopes of preventing another 9/11. For Michael Leiter, who steps down as the center's director on Friday after 4½ years at the helm, there has been a very personal aspect to the job.
After four and a half years at the helm of the National Counterterrorism Center, Michael E. Leiter is ready for a change of pace.
President Barack Obama intends to nominate Matthew Olsen as the next director of the National Counterterrorism Center, the White House announced Friday.
The rash of attempted homegrown terrorist attacks over the past year has the counterterrorism community working at a "relentless" pace to deal with the challenges posed by an evolving enemy, according to the nation's chief counterterrorism officer.
Rep. Ike Skelton took part in the debate that led to Goldwater-Nichols Act of 1986, which established the joint military command to overcome rivalry among the four branches.
The terrorism threat against the United States has evolved, with homegrown terrorists and a greater diversity in the scope and methods of attack making it more difficult to prevent them, top security officials told a Senate committee Wednesday.
Al Qaeda has launched this week what it is calling its first English language online magazine, a move that could be seen as a way to recruit more American-born terrorists.
The director of the National Counterterrorism Center says the U.S. government believes that U.S.-born cleric Anwar al-Awlaki had "a direct operational role" in the attempt to bring down an airliner bound for Detroit, Michigan, on Christmas Day.
Dennis Blair, the president's top intelligence adviser, announced his resignation after 16 months of power struggles, politics and personality clashes.
A Senate Intelligence Committee report released Tuesday sharply criticized the National Counterterrorism Center for failing to properly coordinate intelligence activities to detect the botched Christmas Day airline bombing.
The government had sufficient information to have potentially disrupted an al Qaeda plot to bomb an airliner on Christmas Day, but failed to identify Umar Farouk AbdulMutallab as a potential bomber, a White House review of the incident shows.
A top U.S. intelligence official did take a shortened vacation two days after a botched terror attack on a U.S. passenger jet, but remained in constant contact with national security officials and the White House about the situation, a source told CNN Thursday.
Michael Leiter With today's release of the Obama administration's report on what went wrong to allow a Nigerian man to allegedly board a U.S.-bound flight with explosives, top government officials including Leiter, director of the National Counterterrorism Center, will face increased scrutiny.
To understand how the suspect in the botched terror attack was able to board a plane, you have to understand how the counterterrorism system that President Obama says failed is supposed to work.
Jill Dougherty takes a step-by-step look at why the U.S. failed to slam the door on the alleged Christmas terror suspect.
Security experts say the recent terror scare shows some lessons of 9/11 have been forgotten. CNN's Jim Acosta reports.
The attempted Christmas Day bombing of a commercial airliner has renewed questions of whether the recommendations of the bipartisan 9/11 Commission have been taken seriously.
The father of terrorism suspect Umar Farouk AbdulMutallab talked about his son's extremist views with someone from the CIA and a report was prepared, but the report was not circulated outside the agency, a reliable source told CNN's Jeanne Meserve on Tuesday.
CNN's Jeanne Meserve reports that the CIA failed to circulate information regarding the plane bombing suspect.
The United Kingdom has MI-5, which roots out spies and terrorists in the British Isles.
The National Counterterrorism Center is disputing charges that the computer system that compiles information on terrorists and suspected terrorists from government agencies is ineffective and hindering its ability to track terrorists.
The national security system is broken and needs major changes, according to a congressionally mandated study released Monday.
U.S. vulnerability to al Qaeda-inspired extremism in Europe continues to be the key worry of the National Counterterrorism Center, the head of the agency told a Washington think tank Wednesday.