Definitions for "Insurgency"
A state of insurrection; an uprising; an insurrection.
An organised movement aimed at the overthrow of a constituted government through one of subversion and armed conflict.
(JP 1-02, NATO) - An organized movement aimed at the overthrow of a constituted government through the use of subversion and armed conflict. See FMs 90-8 and 100-20.
Keywords:  defeat, difficult, thing
a very difficult thing to defeat