Russia's unstoppable nukes: Putin reveals new nuclear missiles that cannot be intercepted and can strike almost anywhere in the world
- Vladimir Putin has revealed that Russia has a new nuclear weapon that is 'immune to interception'
- Russian president said his nuclear-powered cruise missile is able to penetrate any missile defence
- He said his arsenal includes a 'fantastic' nuclear-powered underwater drone and a hypersonic missile
- Giving his state-of-the-nation address the President called Russia's nuclear scientists 'the heroes of our time'