Data collected by the media suggest that US drone strikes are declining. For President Obama, who has founded much of his counterterror strategy on drones, that's a significant development.
Lawmakers have plenty of questions for Lois Lerner, the IRS official who ordered the targeting of conservative groups to stop, concerning her past statements. She said she did nothing wrong, but invoked her Fifth Amendment rights.
An FBI interrogation, part of the Boston bombing probe, ends in shooting death of a Chechen immigrant in Florida. The man reportedly knew suspect Tamerlan Tsarnaev. FBI claims self-defense.
Boston bombing suspect Tamerlan Tsarnaev was one of 875,000 names in a database the US uses to produce at least nine watch lists, but the naming didn't prevent the attack. Some security experts worry that data overload may be hindering US counterterrorism efforts.