Definitions of terrorism

The Sept. 11 terrorist attack was a wake-up call for cities across the country — they needed to be ready for terrorism. By all indications thus far, the response of Boston police and fire officials is an example of how far cities have come in preparing for terrorism-inflicted disasters.

Yes, that’s right. Rather than treat terrorism strictly as the frightening, violent act it is, a new book from Lionel Shriver, The New Republic, tries to add a layer of humor to the conversation. Written in 1998, the book is just now being published.

As Boston raises security for July 4th celebrations, anchor Marco Werman discusses the effects of the heightened security with trauma counselor Lisa Fliegel.

As Brazil gets ready to host the Olympics and World Cup, the country won’t just be dealing with threats from civil unrest. There’s also the threat of terrorism. The World’s Jason Margolis has more on that angle from Rio de Janeiro.

US officials tell news outlets that Tamerlan Tsarnaev had been on two databases of potential terrorists for at least 18 months prior to the Marathon bombings.