Finland's only oil refiner has now been ensnared into the investigation.

The European Commission is investigating a potential price manipulation scheme among oil companies.

The British Oil company BP is selling off its stake in a joint venture to the state-run Russian oil company Rosneft.

Dan Lungren, Ami Bera battle in targeted race that pits energy against the environment

The U.S. can become less dependent on foreign oil, but it's still a part of the global oil market –and that means no insulation from oil price shocks.