Under the Soviet system, pretty much all of the top jobs were held by Russians, ethnic Russians, some of whom maybe were sent there originally as expatriates, but eventually the families became acclimatized to living there and they've been there for generations now.
Sous le régime soviétique, pratiquement tous les postes supérieurs étaient occupés par des Russes, d'origine ethnique russe, dont certains sont initialement arrivés comme expatriés mais dont les familles ont fini par s'enraciner et qui vivent là depuis des générations.