This chapter looks at terrorism as a strategic choice. It looks at the calculations that terrorists make, and how terrorism is an attempt to bridge the very limited resources available to terrorists with their large political objectives. In this context, it introduces the idea of strategic scripts: stereotypical responses to given situations. It also introduces the eight broad categories of terrorist scripts explored in the following chapters: survival, power play, mobilization, provocation and polarization, de-legitimization, attrition, co-operation, and de-mobilization.