(/ˈpɒlɪtˌbjʊərəʊ/ )

1. The governing council of the Communist Party of the Soviet Union and other Marxist-Leninist political systems.
2. A senior policy making body in a political organization, generally consisting of members who either are appointed by the party in control of the organization or who attain membership through their personal political affiliations.

… Garbuzov successfully convinced the politburo that the OGAS project, with its ambitious plans to optimally model and manage information flows in the planned economy, was too much too soon. The committee, after nearly going the other way, felt it was safer to support Garbuzov – and the still top-secret OGAS project was left to languish in review limbo for another decade.

From the post OGAS, the Soviet Union’s 1960s-era internet system
Source: How the Soviets invented the internet and why it didn’t work (aeon.co)