"CIVPOL"

I've long argued for an American equivalent of GSG9 rather than disastrous, irrelevant war expeditions in our quest for dealing with political actors that use the illegal tactic of terror in an effort to forward their cause.
Philip Carter mentions that a colleague who is "a leading theorist in the field where crime and warfare converge", Lt. John Sullivan agrees...

Constabulary operations, such as these, are the "missing mission" in the United States security structure. The U.S. has no national police service (the FBI is a non-uniformed investigative agency) and state and local police address these functions internally. Few if any local U.S. Forces could field or contribute to an on-going expeditionary capability without straining their ability to perform their home mission. The U.S. also has no standing constabulary or EXPOL force and relies upon scarce or ill-fitted military units (and ad hoc civilian police units) to fill expeditionary needs. The same is true for NATO and the U.N.

(More at Intel Dump)
I've actually met one of Lt. Sullivan's people at an law enforcement intel seminar. Probably one of the most informative speakers at the conference.

I don't get paid enough...