Career
After the return to democracy in 1999 with the Nigerian Fourth Republic, Suleiman became chairman of the Middle Belt Forum (MBF), a socio-political group representing the people of the Middle Belt of Nigeria. Suleiman played a leading role during the Nigerian Civil War (1966–1970). He was appointed to the cabinet of General Yakubu Gowon in January 1975.
As Federal Commissioner for Special Duties he was instrumental in founding the Economic Community of West African States (ECOWAS).
He assisted in the military rebellion of July 29, 1975 when Gowon was deposed, replaced by General Murtala Muhammed. Murtala Mohammed appointed him Commissioner for Health.
Suleiman was appointed the first military governor of Plateau State in Nigeria from March 1976 to July 1978, after Benue-Plateau State was divided into Benue State and Plateau State. As governor, he made the progressive proposal that anyone born in Plateau State or anyone who had lived in the state for 20 years should enjoy all the rights and privileges of a native regardless of their ethnic origin.
Suleiman retired in 1980 as an Air Commodore.
Suleiman was Chairman of Allied Bank of Nigeria Plc between 1984 and 1986. Suleiman resisted the dictatorship of General Sani Abacha after the elections of 12 June 1993 were annulled. As one of the founders of the National Democratic Coalition (NADECO) he was forced into exile.
Sani Abacha died unexpectedly in June 1998.
On 7 October 1998 Suleiman, NADECO Vice Chairman, returned to Nigeria. He became a leader of the People"s Democratic Party (PDP) in Adamawa State.
He also became chairman of the Middle Belt Forum. In September 2001, as chairman of the MBF Suleiman said the middle belters are grossly marginalised and have become an endangered species on the brink of extinction and cultural annihilation.
In the 2003 PDP primaries in Delta State, Suleiman was head of the electoral panel.
He joined the board of directors of Transport Nationwide Express. From 000000002004-06-03-0000June 3, 2004 to 000000002007-06-04-0000June 4, 2007 he administrated the Embassy of Nigeria in Moscow and was also to Minsk accreditated. As of 2006, Suleiman was Nigerian Ambassador to the Russian Federation.
In June 2007 he was summoned to Russia"s Foreign Ministry to discuss the kidnapping of six Russian employees of RUSAL, the world"s largest aluminium producer.
The workers were snatched from the company"s residential compound in the Niger Delta. In June 2009, President Umaru Yar"Adua appointed him chairman of the Rubber Research Institute of Nigeria.