" No one is an ‘expert’ on terrorism. That is nonsense. Terrorism is fluid. It changes daily. Terrorism used to be hijacking an aircraft and forcing the pilot to take it to another location. This evolved into holding hostages aboard the craft to force governments to do something. Now we have hijackers willing to die on an airplane and kill every passenger along with them. Terrorists have become more desperate and bold. "
― , Splinter Cell (Tom Clancy's Splinter Cell, #1)