UNACO is a fictional agency within the United Nations

United Nations

The United Nations is an international organization whose stated aims are facilitating cooperation in international law, international security, economic development, social progress, human rights, and achievement of world peace...

 created by author Alistair MacLean

Alistair MacLean

Alistair Stuart MacLean was a Scottish novelist who wrote popular thrillers or adventure stories, the best known of which are perhaps The Guns of Navarone, Ice Station Zebra and Where Eagles Dare, all three having been made into successful films...

 in a series of movie outlines he developed before his death. These outlines were made into full-length novels by numerous authors, most notably Alastair MacNeill.
UNACO uses groups of people to form "strike forces". Each strike force has a leader who communicates with UNACO's top commanders. UNACO also works with other agencies around the world.

Formation

...in September 1979 the Secretary-General of the United Nations chaired a meeting attended by 46 envoys representing virtually every country in the world.... The objective of UNACO was to "avert, neutralize, and/or apprehend individuals or groups engaged in international criminal activities." ...UNACO's clandestine existence began on March 1, 1980.

List of works

Year	Title	Notes
1980	Hostage Tower	by John Denis
1981	Air Force One is Down	by John Denis
1989	Death Train	by Alastair MacNeill
1989	Night Watch	by Alastair MacNeill
1990	Red Alert	by Alastair MacNeill
1991	Time of the Assassins	by Alastair MacNeill
1992	Dead Halt	by Alastair MacNeill
1993	Code Breaker	by Alastair MacNeill
1997	Prime Target	by Hugh Miller
1998	Borrowed Time	by Hugh Miller