The post-9/11 'new normal' has evolved: The tactical and emotional responses to the Boston Marathon bombings show what experts call a national maturity toward terrorism that echoes longer experience with such crises in England, Spain, Russia, Japan, and Israel.
Official threat level is unchanged, but security is tight at airports, subways, and other gathering spots, in wake of Bin Laden killing. 'Revenge is very important' to jihadists, warns one expert.
Historically vulnerable cities like New York claim they need more anti-terrorism funds. After Faisal Shahzad's attempted Times Square bombing, will the Department of Homeland Security agree?
Federal officials have refused to answer why Faisal Shahzad, the prime suspect in the failed Times Square bombing, was allowed to board an international flight before being arrested. Experts suggest the feds might have wanted to see if he was meeting anyone.
Like the Christmas Day 'underwear bomber,' the Times Square bomber apparently bungled the job. The 9/11 attacks might have led to a false sense of terrorists' competence.
Video cameras, fingerprints, and chemical clues could all come into play as authorities try to identify who drove an explosives-laden vehicle into Times Square. The bomb plot left behind plenty of evidence.
Analysts debate the rhetoric of war as part of the fight against terrorism.