London, Again

There was an eerie sense of deja vu in London today. Exactly two weeks after four suicide bombs exploded in London's transit system, four detonations occurred this morning on three subways and a bus.

Although the detonations appeared largely ineffective, Scotland Yard released a statement indicating that the bombs were 'meant to kill.'

Hear what Britain is doing to crack down on extremists and secure its cities, and how Londoners are reacting to a second wave of terror.

Guests:

Peter Bergen, senior fellow, The New America Foundation and author of "Holy War, Inc.: Inside the Secret World of Osama bin Laden"

Terence Taylor, president and executive director, U.S. office of the International Institute for Strategic Studies, and former chief inspector to the U.N. Special Commission on Iraq

Paul Rogers, professor of peace studies at the University of Bradford, UK.