Pretty much, and makes it harder for the others to carry out operations when their terrorist teammates get whacked. Possibly it even makes new recruits a bit more hesitant.
I do agree that by killing the "senior" members of these terrorist groups we save many, many innocent lives.. I also believe that initially this will spark "revenge" type attacks, but sooner than later without leadership these groups will become less and less of a threat.
Agreed, taking out their command structure has to hurt their efforts. The "revenge" attacks would occur whether their leaders are attacked or not. It baffles me that anyone believes that peace talks and cowering from these savages would actually result in fewer attacks.
From today's news, it looks like the Palestinians have resorted to using retarded teenagers for homicide bombings. Some desperation must be creeping in.