EIA: “Russia was the world’s largest producer of crude oil (including lease condensate) and the world’s second-largest producer of dry natural gas in 2013. Most of Russia’s crude oil and natural gas production occurs in West Siberia, a part of central Russia that stretches from the northern border of Kazakhstan to the Arctic Ocean. However, new technologies, growing Asian markets, and Western sanctions have the potential to shift the regional balance of Russian oil and natural gas production in the long term.”