An arbitration panel in the Hague has given US oil firm Chevron an important procedural victory in its battle against a $19 billion fine by Ecuador for polluting the Amazon basin region.
Two activists from Greenpeace were on Wednesday scaling an oil platform owned by state energy giant Gazprom in the Russian Arctic in a bid to stop it drilling for oil in a hugely sensitive area.
Oil prices fell in Asian trade Monday after a US-Russia deal on Syria's chemical weapons averted a potential Western military strike on the Assad regime.
US energy giant Chevron and Swiss-based rig operator Transocean signed a deal with Brazilian prosecutors on Friday to settle lawsuits over an oil spill off the coast of Rio de Janeiro.
Oil prices were mixed in Asian trade Wednesday, following big falls in New York and after US President Barack Obama asked Congress to delay a vote on US military action in Syria, analysts.
US oil giant Chevron, hit in Ecuador with a record $19 billion fine for pollution, asked Monday for the court to consider what it claimed was "new evidence" the judge in the case was corrupt.