Western military experts have said the Sarmat is capable of carrying 10 or more nuclear warheads and decoys - easily enough to wipe out territories the size of Britain or France in a single strike.
Commander of Russia’s strategic missile forces, Colonel Sergei Karakayev told Kremlin state television last month that they can fly with different trajectories and evade missile defence systems.
He said: 'There is no existing air defence for the Sarmat missile systems, and it will probably not exist in the coming decades.'
Among other new additions referenced by Putin in his speech are S-500 missile defence systems that he has claimed to be 'unmatched in the world'.
It comes after last month saw a state TV broadcast suggest Britain should be bombed back to the Stone Age 'in ten minutes' with an attack by new nuclear-capable Zircon - or Tsirkon - missiles.
Politician Aleksey Zhuravlyov and TV propagandist Dmitry Kiselyov had earlier advocated striking Britain with Satan-2.
And Russian state TV pundit, Yaakov Kedmi, a Moscow-born former Israeli diplomat, said Russia's new hypersonic Zircon missile should be deployed to wipe out 50 or 60 power stations in the UK 'in ten minutes', plunging the country into darkness.