 After this, he became director of the country's foreign investments in 1969 ("Directeur General des Investissements") at the Ministry of Planning, remaining in that position until 1973.Two prime ministers also enlisted his help as an economic policy advisor under the government of Marien Ngouabi.Milongo married Ndambo Marie-Therese Laurentine on 4 February 1967, and with her he had seven children.