Here’s an interview with Robert Pape, on the logic behind suicide bombings, as he has studied every suicide attack since the 80s.

TAC: If you were to break down causal factors, how much weight would you put on a cultural rejection of the West and how much weight on the presence of American troops on Muslim territory?

RP: The evidence shows that the presence of American troops is clearly the pivotal factor driving suicide terrorism.

Via: Schneier On Security