2-18. The combination of stability tasks performed during operations depends on the situation. In some operations, the host nation can meet most or all of the population’s requirements. In those cases, Army forces work with and through host-nation authorities. Commanders use civil affairs operations to mitigate how the military presence affects the population and vice versa. Conversely, Army forces operating in a failed state may need to support the local population and work with civilian organizations to restore capabilities. Civil affairs operations are essential in establishing the trust between Army forces and civilian organizations required for effective working relationships.