1-10. Unity of effort cannot be attained without trust among all participants. Developing mutual trust and working partnerships among all the various organizations—especially the key leaders and staff of host-nation and international actors—is essential to the success of stability operations. Trust begins at the personal level. Partnerships between a donor nation and the host nation are important, but partnerships among host-nation actors are just as important. Trusted Army professionals understand that the combined military expertise that their organizations bring and their own adherence to the Army Ethic make the greatest positive contribution to the mission. Interpersonal relationships of key actors at the local, regional, and national levels—built on shared understanding, mutual respect, and personal trust—effectively enable accomplishing stability operations, to include security cooperation efforts. Trust also contributes to the legitimacy of the operation and those critical personal relationships assist in achieving the desired end states.