"[T]he system of interaction, involving exchange of information, negotiation, de-confliction, mutual support, and planning at all levels between military elements and humanitarian organizations, development organizations, or the local civilian population, to achieve respective objectives."[1]
"The essential dialogue and interaction between civilian and military actors in humanitarian emergencies that is necessary to protect and promote humanitarian principles, avoid competition, minimize inconsistency, and when appropriate pursue common goals. Basic strategies range from coexistence to cooperation. Coordination is a shared responsibility facilitated by liaison and common training."[2]