VLADIMIR Putin says Russia is developing an "unstoppable" nuclear cruise missile which cannot be intercepted by any anti-missile system on earth.
The newly developed intercontinental ballistic rocket with "unlimited range" was one of several unveiled by the Russian leader in his state of the nation address in Moscow.
They include a nuclear-powered cruise missile, a nuclear-powered underwater drone and new hypersonic missile which apparently have no equivalent.
Footage shown during his speech apparently showed the new "unstoppable" missile heading toward the United States as he promises to "neutralise" America's missile defence.
"Russia remained a nuclear power but no one wanted to listen to us," Putin, 65, told lawmakers. "Listen to us now."
He said the hypersonic intercontinental rocket, known as the Avangard, is capable of travelling 20 times the speed of sound and strike "like a meteorite, like a fireball".
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