The move comes amid hope of large-scale investment from Seoul into Siberia.
Going by train all the way from Beijing (or even London) to New York could become a reality.
Fears for plan to stimulate Russian economy via major infrastructure links to Asia and Europe as Beijing announces rival scheme.
Officials from Russia and North Korea say the long-waited train connection is now almost ready.
The distance between capital city Moscow and key Siberian cities could shrink in plan envisaged by the Kremlin leader.
After a series of delays, Prime Minister orders the line to Russia’s diamond capital Yakutsk to be ready for the first passengers by July.
The Russian government is to give priority to Siberia and the Far East as it puts modernisation on fast-forward, insists Dmitry Medvedev.
One estimate is half a million new jobs stemming from improvements to the Baikal-Amur Mainline link amid hopes of foreign investment.
Special train - the Eurasian Star - will reopen exotic and historic trail linking China, Mogolia and Russia.