Terrorism and its goals

Osama bin Laden
A Pakistani man looks at a poster of Al-Qaeda leader Osama Bin Laden at a book shop in Quetta, July 3, 2006.
Photo by BANARAS KHAN/AFP/Getty Images

Terrorism: It's a term that's been uttered countless times in the last five years, but what does it mean? What is a terrorist, and what are the goals of terrorism?

Harvard University's Louise Richardson offered some answers in a speech Tuesday at the World Affairs Council of Northern California.