iron triangle

Noun

 * 1)  The policy-making relationship among the congressional committees, the bureaucracy (executive, sometimes called “government agencies”), and interest groups or lobbyists.
 * 2)  Any self-reinforcing power structure, whether intentional or accidental, formal or informal.
 * 1)  Any self-reinforcing power structure, whether intentional or accidental, formal or informal.
 * 1)  Any self-reinforcing power structure, whether intentional or accidental, formal or informal.

Proper noun

 * 1)  A key communist Chinese and North Korean concentration area and communications junction during the Korean War, located in the central sector.
 * 2)  A stronghold of the Viet Minh during the Vietnam War, located north of Saigon.
 * 1)  A stronghold of the Viet Minh during the Vietnam War, located north of Saigon.