Acheikh ibn Oumar is a Chadian politician and military leader. In the 1980s he led the Democratic Revolutionary Council

Democratic Revolutionary Council

The Democratic Revolutionary Council was a faction of FROLINAT founded by Ahmat Acyl and later headed by Acheikh ibn Oumar and was also known as the New Vulcan Army....

 (CDR), a military-political group opposing the government of President Hissène Habré

Hissène Habré

Hissène Habré , also spelled Hissen Habré, was the leader of Chad from 1982 until he was deposed in 1990.-Early life:...

.

In 1986 the CDR withdrew support for Goukouni Oueddei

Goukouni Oueddei

Goukouni Oueddei is a Chadian political figure. He was Head of State of Chad from 1979 to 1982. He is currently in exile.-Biography:...

, leaving Goukouni isolated. Libya switched support from Goukouni to Oumar, backing Oumar's forces as they took Erdi in northern Chad, and sending aircraft and tanks to help Oumar defend against a counter-attack by Toubou forces loyal to Goukouni. In mid-November 1986, supported by Libya

Libya

Libya is an African country in the Maghreb region of North Africa bordered by the Mediterranean Sea to the north, Egypt to the east, Sudan to the southeast, Chad and Niger to the south, and Algeria and Tunisia to the west....

, Oumar became president of a newly constituted GUNT

Gunt

The Gunt is a red river in the south of Tajikistan. Its source, Lake Yashilkul, is situated at the edge of the Alichur Pamir, a high plateau or pamir at an elevation of 3720m...

, consisting of seven of the original eleven factions. In 1987 Oumar's militia was driven into Darfur

Darfur

Darfur is a region in western Sudan. An independent sultanate for several hundred years, it was incorporated into Sudan by Anglo-Egyptian forces in 1916. The region is divided into three federal states: West Darfur, South Darfur, and North Darfur...

 by French and Chadian forces, fighting the Fur people

Fur people

The Fur are an ethnic group from western Sudan, principally inhabiting the region of Darfur where they are the largest tribe....

 there.

In March 1988 Goukouni resestablished control of GUNT, and in June 1988 Oumar was arrested in Tripoli

Tripoli

Tripoli is the capital and largest city in Libya. It is also known as Western Tripoli , to distinguish it from Tripoli, Lebanon. It is affectionately called The Mermaid of the Mediterranean , describing its turquoise waters and its whitewashed buildings. Tripoli is a Greek name that means "Three...

. After negotiations in Iraq

Iraq

Iraq ; officially the Republic of Iraq is a country in Western Asia spanning most of the northwestern end of the Zagros mountain range, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....

, Oumar returned to Chad in November 1988, this time heading forces supporting President Habré. Habré made Oumar Minister of Foreign Affairs in 1989. As Minister of Foreign Affairs, Oumar was the Chadian representative in Algiers for the 31 May 1989 effort at peaceful resolution of the dispute with Libya over the Aozou Strip

Aozou Strip

The Aouzou Strip is a strip of land in northern Chad which lies along the border with Libya, extending south to a depth of about 100 kilometers into Chad's Borkou-Ennedi-Tibesti Region for an area of 114,000 km²...

.

Oumar later served in President Déby

Idriss Déby

General Idriss Déby Itno is the President of Chad and the head of the Patriotic Salvation Movement. Déby is of the Bidyat clan of the Zaghawa ethnic group. He added "Itno" to his surname in January 2006.-Rise to power:...

's government.

In December 1999 Oumar became the leader of a new political grouping, the Comité politique d'action et de liaison (CPAL). In 2006 the CDR joined the UFDD alliance in opposition to President Déby, but Oumar left the UFDD in April 2007, and founded the UFDD-F with Aboud Mackaye.