Russia , single-largest natural gas producer , has 20 percent of global gas reserves . Gazprom business accounts for 20 percent of Russia 's gross domestic product . Gazprom disputes with Russia has seen Russian nations wary of the company . European president and prime minister show strong interest in the company .
Russia , single-largest natural gas producer , has 20 percent of global gas reserves . Gazprom business accounts for 10 percent of Russia 's gross domestic product . Gazprom disputes with Ukraine has seen European nations wary of the company . Russian president and prime minister show strong interest in the company .