Mohamed Khouna became prime minister on 31 May 1979, a few days after the death in an
airplane crash of the previous prime minister, Col.
Ahmed Ould Bouceif, with whom he had seized power for the CMSN just a month earlier, from Col.
Mustafa Ould Salek and the CRMN. On 4 January 1980 he seized power from Ould Salek's successor as
head of state,
Mohamed Mahmoud Ould Louly. He continued to also hold the position of
prime minister until December of that year, when a civilian,
Sid'Ahmed Ould Bneijara, was appointed to the post. On March 16, 1981, a violent coup attempt against Mohamed Khouna failed. Mohamed Khouna accused
Morocco of being behind the coup, which Morocco denied, and in the next month
Maaouya Ould Sid'Ahmed Taya was appointed prime minister. Another attempted coup was allegedly sponsored by
Libya. On December 12, 1984, however, Taya ousted Mohamed Khouna in a coup while the latter was out of the country. Mohamed Khouna had been at a
Franco-African Summit in
Burundi and learned of the coup in
Brazzaville, during his return to Mauritania, from
Denis Sassou Nguesso, the president of the
Republic of the Congo. Mohamed Khouna returned to Mauritania anyway and was arrested at the airport in
Nouakchott; he was eventually released in December 1988. Relations were completely severed between 1981 and 1985, when they were restored by Mohamed Khouna's successor. However, relations improved with POLISARIO's main regional backer,
Algeria, with the Algerian government sending arms, ammunitions and supplies to bolster his regime. Mohamed Khouna's 1984 recognition of the
Sahrawi Arab Democratic Republic (SADR, the POLISARIO's
government-in-exile) as a sovereign nation appears to have been one of the triggering causes for
Maaouya Ould Sid'Ahmed Taya's coup in late 1984. as well as several failed attempts to rebuild the political system shattered by the 1978 coup—first as a multiparty system, and then, after the first coup attempt against him, as a one-party state. Political opponents were treated harshly, with imprisonments and those responsible for one of the failed coups against his government were executed. == Activities after losing power ==