Why is it that we are at war with terrorist, terrorism is an act, when you drop a bomb, you are terrorizing?

we are at war with right wing extremist musloms, who sole objective is to earase christanity. and harm the usa at any cost, so lets call them for who they are. to many normal muslums are scrutanize for not joining the wakey ultra fanatics,they are ready to die for the cause, but are they ready to strap a bomb to there mothers, doughters,sisters, not