How to pronounce
Oligarch

The term oligarch is of Greek origin, and it indicates a member of an oligarchy, the political regime in which power is in the hands of the very few rich and powerful.
The word oligarch refers to the Russian oligarchs, who became extremely rich with privatisation following the Soviet Union's dissolution, and now hold power in Russia.
The correct pronunciation of oligarch is OH-lee-gahrk. The stress is on the capital letters.