Kubba was appointed Deputy Minister of Petroleum in 1960. He played a crucial role in launching the Organization of Petroleum Producing Countries (OPEC). With his contacts during his experience throughout the 1940s and 1950s, Mr. Kubba was able to assist and formalize
OPEC. Being an Iraqi initiative, the Organization was then inaugurated in Baghdad. At first, OPEC comprised Iraq, Saudi Arabia, Kuwait, Iran, and Venezuela only. Mr. Kubba became Iraq's first delegate to OPEC and represented Iraq numerous times between 1960 and 1966. After 1960, he attended OPEC meetings in Switzerland (OPEC HQ between 1961 and 1965) and Vienna (OPEC HQ 1965–present) while representing Iraq. In 1966, Mr. Kubba was OPEC conference president, being the first official conference president from Iraq. Kubba was appointed
Minister of Finance in February 1963 Kubba returned to government service in 1964 as chairman of the board at the
Iraq National Oil Company, the first Iraqi company in this field. Despite the salary sacrifice caused by leaving the private sector, he exerted diligent efforts in this position, as was his custom. Between 1965 and 1969, Mr. Kubba was appointed Governor of the
Central Bank. He represented Iraq in meetings with the World Bank and the International Monetary Fund. He was chosen as a member of the fundraising committee for the University of Kufa project. He raised a significant amount of money donated by businessmen and merchants because of their trust in Saleh Kubba. == Post-1969 ==