Russia has started delivering oil to China through a new pipeline.
The Russian pipeline monopoly Transneft announced that it had started sending oil through the Eastern Siberia-Pacific Ocean pipeline.
Some 2,700 kilometers of the pipeline have been built.
When it is finished in 2013, the pipeline will stretch more than 4,000 kilometers, making it the world's longest.
At a cost of $25 billion, it dwarfs all other infrastructure projects in post-Soviet Russia.
Up till now, Russia has shipped oil to China by railroad.
compiled from Reuters reports