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Pump jacks in an oil field over the Monterey Shale formation on March 24, 2014 near Lost Hills, California. (David McNew/Getty Images)

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Russian gas giant Gazprom's logo is attached on the roof of the recently built Adler thermal power plant in the Russian Black Sea resort of Sochi on November 30, 2013.(YURI KADOBNOV/AFP/Getty Images)

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Indian Prime Minister Narendra Modi (5th L) shakes hands with Pakistani Prime Minister Nawaz Sharif (3rd R) as Sri Lankan President Mahinda Rajapakse (R) looks on after the swearing-in ceremony at the Presidential Palace in New Delhi on May 26, 2014.(PRAK

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Syrian Opposition Coalition President Ahmad Jarba speaks during a press conference during the 'Friends of Syria' meeting on May 15, 2014 in London, England. (Matt Dunham - WPA Pool/Getty Images)

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Members of the Vostok Battalion, a pro-Russia militia, stand guard in an intersection on May 20, 2014 in Donetsk, Ukraine. (Brendan Hoffman/Getty Images)