The lines between combatants and civilians have blurred when the actors are not exclusively High Contracting Parties (HCP). Since the fall of the Soviet Union, an HCP often is faced with a non-state actor, as argued by General Wesley Clark in 2007. Examples of such conflict include the Sri Lankan Civil War, the Sudanese Civil War, and the Colombian Armed Conflict, as well as most military engagements of the US since 2000.