Power of Siberia 2 project would offer lifeline to exporter Gazprom as Moscow’s dependence on its neighbour grows

Oil cartel tries to placate members while conceding it has little room to increase production

Consolidation battle is forcing shrinking number of oil companies to look further afield for new prospects

Prices for the metal are booming, but there are political risks

Victory for campaigners is expected to face legal challenges from fossil fuel companies

Oil cartel wants to reassure members that 5.8mn barrels a day of cuts will not last for ever