What is the role of petroleum in Russia's economy?

Related questions

1. What is the typical rent for a 1 bedroom apartment in Moscow Russia?
2. Why the Soviet Union collapsed?
3. Are credit cards widely accepted in Russia?
4. What destroyed the Soviet Union?
5. What caused the collapse of the Soviet Union in 1991?
6. Is Russia in a recession?
7. What happens when a nation defaults?

Tags

1. #reached
2. #natural
3. #largest
4. #production
5. #world
6. #barrels
7. #crude
8. #petroleum
9. #russian
10. #million
11. #exporter
12. #condensate
13. #industry
14. #russia
15. #soviet
16. #maximum
17. #reserves