A new publication (pdf) from the Joint Chiefs of Staff defines military doctrine regarding “peace operations.”
Peace operations utilize “all instruments of national power with military missions to contain conflict, redress the peace, and shape the environment to support reconciliation and rebuilding and facilitate the transition to legitimate governance. Peace operations include peacekeeping, peace enforcement, peacemaking, peace building, and conflict prevention efforts.”
There are 15 fundamental elements of peace operations, according to the new doctrine, including: transparency, impartiality, credibility, freedom of movement, restraint and minimum force, and so on.
See “Peace Operations,” Joint Publication JP 3-07.3, October 17, 2007.