Saudi Arabia, Russia, Qatar and Venezuela have agreed to freeze their oil output at January levels if other producers follow suit.
Russia's economy contracts by 3.7% in 2015, according to preliminary figures published by the country's statistics service.
Saudi Arabia, Russia, Qatar and Venezuela have agreed to freeze their oil output at January levels if other producers follow suit.
Russia's economy contracts by 3.7% in 2015, according to preliminary figures published by the country's statistics service.
