As permafrost across more than half of Russia thaws, critical oil and gas infrastructure is becoming defective. If Moscow fails to curb its dependence on fossil fuels, it risks losing power and influence on the geopolitical stage

It’s been more than five years since Russia annexed Crimea, but with contrasting financial reports emanating from the peninsula, it’s difficult to determine just how beneficial the move has been for Moscow

World Finance interviews Liam Halligan, economist and financial journalist, on Europe’s role in the Crimea crisis and why the EU has been slow to impose strict sanctions