Under Marien Ngouabi, Nzé was appointed as Minister of State[2] for Information, Popular Education, and Cultural Affairs in the government named on January 1, 1969.[2][3] On June 21, 1969, Nzé was included on the five-member Executive Committee of the ruling National Revolutionary Council (CNR) as President of the Education, Press, and Propaganda Committee.[4] He was a founding member of the PCT in December 1969 and was one of the original members of its Central Committee;[5] he was also included in the party's original Political Bureau and was assigned responsibility for propaganda.[4] He was again included in the smaller, five-member Political Bureau elected in December 1971 and was assigned responsibility for organization and propaganda.[6]
Acting as spokesman for the PCT Political Bureau, Nzé announced a new draft constitution following its adoption by the December 1972 PCT congress; at the same congress, he was included on the PCT's five-member Political Bureau.[7] He was expelled from the party along with others on June 11, 1976,[8] although he was subsequently readmitted and restored to a seat on the Political Bureau.[9] He was later Minister of Foreign Affairs from 1979[10] to 1984 under President Denis Sassou Nguesso;[11] he was also assigned responsibility for foreign relations on the Political Bureau during the same period.[10] He made an official visit to the Soviet Union in May 1979.[12]
In August 1984, Nzé was replaced as Foreign Minister by Antoine Ndinga Oba, who had previously served as Minister of Education;[11] Nzé remained on the Political Bureau with responsibility for foreign relations.[13] Although he was considered "one of the PCT's leading theoreticians",[14] Nzé was subsequently removed from the PCT Political Bureau at a plenary session of the Central Committee in November 1986, when the Political Bureau's size was decreased from 13 members to 10 members.[14][15]
Following the introduction of multiparty politics, Nzé led the National Union for Democracy and Progress (UNDP), a political party founded in 1990.[16] In June 1997, following the outbreak of the 1997 civil war, Nzé was included on the National Mediation Committee.[17] He represented Sassou Nguesso in a consultation meeting related to the conflict that took place in Brazzaville in mid-June.[18] The war concluded with Sassou Nguesso's rebel forces capturing Brazzaville in October 1997, and in the national unity government formed under Sassou Nguesso on November 2, 1997,[19][20][21] Nzé was appointed as Minister of State for Justice.[19][20] He headed the Republic of Congo's delegation to a meeting, held in Kinshasa on September 22, 1998, in which bilateral relations between the Republic of Congo and Democratic Republic of the Congo were discussed.[22] Acting on behalf of Congo-Brazzaville's government, he later signed a non-aggression pact with Democratic Republic of the Congo in December 1998.[23]
In the government appointed on January 12, 1999, Nzé was replaced as Justice Minister, and he was not included in the government.[24][25] He was then appointed as a Political Delegate to the President of the Republic on January 18, 1999.[26]
Standing as a UNDP candidate, Nzé was elected as a Senator from Sangha Region in the 2002 Senate election.[27] On August 23, 2002, he was elected by the Senate as a Vice-President of the Commission on Foreign Affairs, Regional Integration, and Development Cooperation.[28] In the October 2005 Senate election, Nzé was re-elected to the Senate as a UNDP candidate in Sangha Region. He received the votes of 54 electors, placing sixth and therefore winning the last of the six available seats from Sangha Region.[29]
The UNDP merged into the New Democratic Forces (FDN) in early 2007, and Nzé became one of three FDN senators.[30] Following the FDN's First Ordinary Congress on 2–3 May 2010, Nze was installed as one of the seven members of the High Council of Dignitaries, a consultative body within the FDN leadership, on 1 June 2010.[31]
Nzé was appointed as Personal Representative of the President on 20 September 2011.[32] He was not re-elected to the Senate in the October 2011 Senate election.[33][34]
^ abRémy Bazenguissa-Ganga, Les voies du politique au Congo: essai de sociologie historique (1997), Karthala Editions, page 150 (in French).
^"Jan 1969 - Major Ngouabi appointed Head of State. - New Government", Keesing's Record of World Events, volume 15, January 1969, page 23,148.
^ abBazenguissa-Ganga, Les voies du politique au Congo: essai de sociologie historique, pages 158–160 (in French).
^"Feb 1970 - Creation of Congolese Workers’ Party. - Establishment of People's Republic of the Congo based on Marxist-Leninist Principles. Cabinet superseded by Council of State. - Abolition of National Assembly", Keesing's Record of World Events, volume 17, February 1970, page 23,820.
^Bazenguissa-Ganga, Les voies du politique au Congo: essai de sociologie historique, page 193 (in French).
^"Mar 1973 - New Draft Constitution. - Government Reorganization. - Suppression of Alleged Plot", Keesing's Record of World Events, volume 19, March 1973, page 25,776.
^"Sep 1976 - New Council of State and Special Revolutionary General Staff - Other Internal Developments", Keesing's Record of World Events, volume 22, September 1976, page 27,940.
^"May 1981 - Speeches by Foreign Delegates", Keesing's Record of World Events, volume 27, May 1981, page 30,840.
^ abBazenguissa-Ganga, Les voies du politique au Congo: essai de sociologie historique, pages 263–264 (in French).
^"Décret n°:99-3 du 18 January 1999 portant nomination d'un délégué politique auprès du Président de la République, Maître Pierre Nzé", Presidency of Congo-Brazzaville.