A recent article in Foreign Policy Magazine by Whitney Kassel raises some interesting points on the use of unconventional warfare (UW) to achieve U.S. foreign policy objectives. The author provides us examples of how training, advising, assisting, and equipping foreign military forces have yielded less than optimal results for the goals of the United States. The Pentagon calls this providing Security Force Assistance (SFA) to a Foreign Security Force (FSF) . See Security Force Assistance in Afghanistan for an example of SFA at work.
Kassel argues that the White House et al should consider the use of unconventional warfare by Special Operations Forces (SOF). A more accurate consideration would be UW by U.S. Army Special Forces; this military organization is specially trained for UW (see Special Forces training). The example provided in the article is the use of Peshmerga forces in the current Iraq conflict. The Peshmerga, Kurdish security forces, are organized loosely as either part of the regional security force of the Kurdish Regional Government (KRG) or one of the militias of various Kurdish political parties in Kurdistan. Read the full article at the link below:
"Send in the Guerrillas", Foreign Policy Magazine, September 8, 2014.