That should be how it is. Special ops and the CIA have more of the precision you need when dealing with these small and scattered groups. We know how the army completely blew capturing bin Laden in December 2001 in Tora Bora.
Special ops are more tactical--they aren't used for long term strategic objectives. And politicians and the public will be hesitant to allow CIA assassinations. It's not like the movies. And locating the "bigs" in closed terrorist organizations is very difficult because of limited tactical intelligence coming in about them. Plus, there are all sorts of legal and bureaucratic hoops to go through in operations like this.
Special ops, and the CIA have the split second reaction time necessary to react to information in a changing environment.
They are the perfect tool to combat a group as headless and fluid as terrorists.
Not at all. CIA is far more limited than popular belief has it. This should be obvious, as it has been 8 years without catching Bin Laden and other top dogs. It's really not like the movies. The CIA is not everywhere.