Answer: Foreign Internal Defense
Explanation: Foreign Internal Defense could simply be defined as the joint effort used in combating unrest in a foreign country. The foreign country being the Host Nation is aided through external support provided by other countries through the provision of a joint, synchronized effort of civilian, the military and other government agencies providing multidisciplinary support in a bid to assist the Host Nation of getting rid of unrest such as subversion, terrorism, banditry and other forms of threat to National security.
