In blog ‘#31 BACKGROUND – COIN Warfare & the ISAF’s COIN Strategy: Battle for the Majority Population’, I briefly outlined the central theoretical doctrine and most important principles of Counter-Insurgency (COIN) warfare. This appendix will present a fuller overview of counter-insurgency, by providing various definitions of COIN, the nature of COIN warfare to quell an insurgency, and – most importantly perhaps – addressing five false expectations of COIN war in the modern era, which continue to frustrate national and international efforts to defeat dangerous and destabilising insurgencies in nations around the world today.