Footage from privately owned surveillance cameras along the Boston Marathon route gave the FBI early clues about the bombing suspects. But the proliferation of cameras in America's big cities raises some tricky questions about the balance between security and privacy.

Steve Inskeep talks with Karen Greenberg, Director of Fordham University's Center on National Security, about defining terrorism, what it means to call an act domestic versus international terrorism and the political ramifications.

The suspect in the the marathon bombings in Boston, Dzhokhar Tsarnaev wakes up Tuesday morning in the custody of Federal Marshals — his prosecution officially under way. Federal prosecutors are charging him with using and conspiring to use a weapon of mass destruction.

Charges have been filed against the surviving suspect in the Boston Marathon bombing case. Dzhokhar Tsarnaev is accused of conspiring to use a weapon of mass destruction — in this case, the bomb used to kill three people and injure many more. New details about the government's evidence against Tsarnaev and his older brother are emerging.

Did the Boston bombings slow or derail efforts to overhaul the nation's immigration system? Early indications are that it's on track.

The U.S. military announced Sunday that 84 of the 166 prisoners at the camp are on hunger strike; 16 of them are being force fed through tubes.