Iron Triangle (Vietnam) Iron Triangle (Vietnam) The Iron Triangle (Vietnamese:"Tam Giác Sắt") was a area in the Bình Dương Province of Vietnam, so named due to it being a stronghold of Viet Minh activity during the war. The region was under control of the Viet Minh throughout the French war in Vietnam and continued to be so throughout the phase of American involvement in the Vietnam War, despite concerted efforts on the part of US and South Vietnamese forces to destabilize the region as a power base for their enemy, the communist North Vietnamese–sponsored and–directed South Vietnamese insurgent movement, the National Liberation Front
The Auld Triangle in a prison (in real life Mountjoy Prison where Behan had once been lodged) the day a convict is set to be executed. The triangle in the title refers to the large metal triangle which was beaten daily in Mountjoy Prison to waken the inmates ("The Auld Triangle goes Jingle Jangle"). The triangle still hangs in the prison at the centre where the wings meet on a metal gate. It is no longer used, though the hammer to beat it is mounted beside it. In the original play by Brendan Behan, the song is written as the "old triangle" not