Russia has successfully tested Inter-Continental Ballistic Missile (ICBM) for its revamped Soviet era ‘nuclear trains’ program.
The missile advancement comes as Kremlin deploys nuclear-capable missiles along the Polish border.
Tests on missiles for the Barguzin "railway-based combat rocket system" were carried out at the Plesetsk cosmodrome two weeks ago, the Interfax news agency reports.
"They were fully successful," the agency reported quoting an unnamed military source, "paving the way for further flight tests."
The mobile weapons platform, made up of several train carriages designed to conceal the launchers of six Yars or Yars-M thermonuclear ICBMs and their command units, are expected to enter service between 2018 and 2020.
Lieutenant-General Sergai Karakayev, who commands Russia's strategic missile forces, said the Barguzin would be superior to the Soviet-era Molodets nuclear trains in accuracy and range.
He expects them to be in service until 2040.
The Soviet Union had 12 Molodets trains in total, each of which were equipped with three nuclear missiles. Known by the Nato designation Scalpel, they were disposed of between 2003 and 2005.
Russia's latest advancement in its nuclear weapons technology comes as a senior MP announced the deployment of nuclear-capable missiles to the Kaliningrad exclave.
Moscow will deploy S-400 surface-to-air missiles and nuclear-capable Iskander missiles to the exclave, which borders Poland and Lithuania.